Hybrid Augments:
Hybrid Augments are 'Rare' value and are not as good as either of the effects they're providing from a single-type Augment, but have multiple bonuses.

Name: Vitality
Effects: Health+, Healing
Levels: I (+20 HP, 180s regen), II (+40 HP, 135s regen), III (+60 HP, 90s regen)
Specials?: N/A

Name: Antigrav
Effects: Reduce gravity by 5%, 10%, and 15%
Levels: I, II, III
Specials?: Provides Air perhaps?

Name: PlusGrav
Effects: Provides normal Gravity, even in Lo-Grav areas (good for asteroid mining)
Levels: I
Specials?: Provides Air (perfect for that TC mod that makes EPPs not provide air all the time)

Name: Marathon
Effects: Greatly boosts Speed and Energy Regen
Levels: I (+10% Speed & ERegen), II (+20% Speed & ERegen), III (+30% Speed & ERegen)
Specials?: Reduce hunger depletion rate, maybe?

Name: WAR Augment
Effects: Health+, Energy+
Levels: I (+20 HP & Energy), II(+40 HP & Energy), III(+60 HP & Energy)
Specials?: N/A

Epic Augments
Epic Augments are 'Legendary' rarity and have effects above the norm, akin to legendary weapons.

Name: Traveller's Augment
Effects: Jump Boost, Speed Boost, Swim Boost
Levels: I (+15% per boost)
Specials?: Prevents Poison and Burning, provides Light II

Name: Juggernaught's Augment
Effects: Health+, Damage+, Healing
Levels: I (+90 HP, +25% dmg, 90s regen)
Specials?: Reduced jump height and speed (-50% each)

Name: Gunslinger's Augment
Effects: Energy+, ERegen, Light,
Levels: I (+60 Energy, +20% ERegen, Light III)
Specials?: Reduced jump height and speed (-50% each)

Name: Sniper's Augment
Effects: Massive damage boost - but at a cost
Levels: I (+200% dmg)
Specials?: Reduced jump height and speed (-50% each)

Originally posted by Xavius:

Hybrid Augments:
Hybrid Augments are 'Rare' value and are not as good as either of the effects they're providing from a single-type Augment, but have multiple bonuses.

Name: Vitality
Effects: Health+, Healing
Levels: I (+20 HP, 180s regen), II (+40 HP, 135s regen), III (+60 HP, 90s regen)
Specials?: N/A

Name: Antigrav
Effects: Reduce gravity by 5%, 10%, and 15%
Levels: I, II, III
Specials?: Provides Air perhaps?

Name: PlusGrav
Effects: Provides normal Gravity, even in Lo-Grav areas (good for asteroid mining)
Levels: I
Specials?: Provides Air (perfect for that TC mod that makes EPPs not provide air all the time)

Name: Marathon
Effects: Greatly boosts Speed and Energy Regen
Levels: I (+10% Speed & ERegen), II (+20% Speed & ERegen), III (+30% Speed & ERegen)
Specials?: Reduce hunger depletion rate, maybe?

Name: WAR Augment
Effects: Health+, Energy+
Levels: I (+20 HP & Energy), II(+40 HP & Energy), III(+60 HP & Energy)
Specials?: N/A

Epic Augments
Epic Augments are 'Legendary' rarity and have effects above the norm, akin to legendary weapons.

Name: Traveller's Augment
Effects: Jump Boost, Speed Boost, Swim Boost
Levels: I (+15% per boost)
Specials?: Prevents Poison and Burning, provides Light II

Name: Juggernaught's Augment
Effects: Health+, Damage+, Healing
Levels: I (+90 HP, +25% dmg, 90s regen)
Specials?: Reduced jump height and speed (-50% each)

Name: Gunslinger's Augment
Effects: Energy+, ERegen, Light,
Levels: I (+60 Energy, +20% ERegen, Light III)
Specials?: Reduced jump height and speed (-50% each)

Name: Sniper's Augment
Effects: Massive damage boost - but at a cost
Levels: I (+200% dmg)
Specials?: Reduced jump height and speed (-50% each)

I'm liking this! I may make a few slight changes to some like Juggernaught, Gunslinger and Sniper and such. But, I will get to work on what I know I could implement tomorrow.
I'm not sure on how to implement recipies or anything as of YET, but I will search through the game files to give me some clues. I'm quite exited to add these in and I think I may add you as a contributor too for these ideas!

Yay!
Again, Juggernaught, Gunslinger, and Sniper (and the other Epics) are meant to be Legendary, and acordingly rare.

Don't worry, I'm not gonna nerf hammer them to ♥♥♥♥♥, just something more... plausable?

How so? I mostly just want to know because I'm nosy, but also because I do my best working off other people, and I would love to go back and forth to refine these ideas.
Also, keep in mind the Juggernaught, Gunslinger, and Sniper all ccome with penalties as part of their package deal, meaning they're most useful when used in boss fights or defending your base/self in PvP.

I was thinking like turning the speed penalty to 40% and tweaking some of the bonuses a little so the debuff doesn't outweigh the others. Also i got War and Vitality working :D. trying to get Antigrav to work atm.
I tweaked War and Vitality a bit too.

Edit: Forgot to mention that I made them stackable with each other.

Also added my own set of Hybrids
Beast (Adds 30/60/90 HP & 9%/18%/27% Damage)
Power (Adds 35/70/105 Energy & 9%/18%/27% Damage)
Renegade (Adds 60 HP & 18% Speed and Jump)
Energized (Adds 75 Energy & 18% Speed and Jump)

I think i gotta add you as a friend to put you in the contributors

Yaaay! More friends!
As for the speed penalties, it was mostly to make them limiting in when you'd use them, since they have huge bonuses.
The numbers I used, by the way, were intentionally the 'vanilla' versions to stand as 'lesser' compared to the better versions you're using, if you were wondering.

May I ask what the tweaks on WAR and Vitality are?

you can check the changelog :)
but all i did was increase the health and energy slightly on WAR and slightly increased the health on Vitality

MORE AUGMENTS!!!
Boon Augments Are of the 'Uncommon' rarity, and easy to find in most places. They rarely have higher-level effects, but provide a decent number of boosts to help a starting player out.

Name: Pyromaniac's Boon
Effects: Health+, Light
Levels: I (+15 hp, Light I)
Specials?: Also provides Fire and Heat Resistance, like a Burn Spray and a Cooling EPP in one!

Name: Cryophile's Boon
Effects: Health+, Light
Levels: I (+15 Health, Light I)
Specials?: Also provides Cold Resistance, like a Heating EPP!

Name: Germaphobe's Boon
Effects: Energy+, Light
Levels: I (+15 Energy, Light I)
Specials?: Also provides Poison and Rad Resistance, like an Antidote and Shielding EPP in one!

Name: Warrior's Boon
Effects: Health+, Light
Levels: I (+20 hp, Light I)
Specials?: Nothing much, really.

Name: Scientist's Boon
Effects: Energy+, Light
Levels: I (+20 Energy, Light I)
Specials?: Nothing much, really.

Cheap Augments can be crafted at the Tier 2 Anvil (the Forge) in the same tab as the EPPs themselves. They have low-grade effects, are 'common' rarity, but are easily accesible from the Forge onwards.

Name: ProHeal!
Effects: Healing
Levels: I (240s Regen)
Cost: 1 Silicon Board, 8 Copper Wire, 1 Stick of RAM

Name: ToughGuy
Effects: Health+
Levels: I (+10 HP)
Cost: 1 Silicon Board, 8 Copper Wire, 1 Stick of RAM

Name: Sugar Rush
Effects: Energy+
Levels: I (+10 Energy)
Cost: 1 Silicon Board, 8 Copper Wire, 1 Stick of RAM

Name: Cheetah Speed!
Effects: Speed Boost
Levels: I (+8% Speed)
Cost: 1 Silicon Board, 8 Copper Wire, 1 Stick of RAM

Name: MadMan
Effects: Damage Boost
Levels: I (+8% dmg)
Cost: 1 Silicon Board, 8 Copper Wire, 1 Stick of RAM

Name: Nurse's Aid
Effects: Healing
Levels: I (180s Regen)
Cost: 1 Stick of RAM, 1 Bar of Gold, 4 Copper Wire, 1 ProHeal!

Name: Thick Hide
Effects: Health+
Levels: I (+15 HP)
Cost: 1 Stick of RAM, 1 Bar of Gold, 4 Copper Wire, 1 ToughGuy

Name: ReCaff
Effects: Energy+
Levels: I (+15 Energy)
Cost: 1 Stick of RAM, 1 Bar of Gold, 4 Copper Wire, 1 Sugar Rush

Name: Jetstream
Effects: Speed Boost
Levels: I (+16% Speed)
Cost: 1 Stick of RAM, 1 Bar of Gold, 4 Copper Wire, 1 Cheetah Speed!

Name: Psycho
Effects: Damage Boost
Levels: I (+16% dmg)
Cost: 1 Stick of RAM, 1 Bar of Gold, 4 Copper Wire, 1 MadMan

Name: HundredWatt
Effects: Light
Levels: I (Light I)
Cost: 1 Silicon Board, 8 Copper Wire, 1 Stick of RAM, 1 Flashlight

Name: Tank
Effects: Health+ , Armor+ , Speed- , Jump-
Level1: (+20)------(+25%)-----(-9%)---(-12%)
Level2: (+40)------(+35%)----(-18%)--(-20%)
Level3: (+60)------(+45%)----(-27%)--(-28%)
Special: Minor/Medium resistence to fire,ice,radiation, and poison?

Name: SuperSonic-Coward
Effects: Speed+ , Swimming Spd+ , Jump+ , damage- , Armor- , Health-
Level1: (+25%)---------(+15%)----------(+10%)-----(-10%)------(-20%)----(-15)
Level2: (+35%)---------(+20%)----------(+15%)-----(-15%)------(-30%)----(-25)
Level3: (+45%)---------(+25%)----------(+20%)-----(-20%)------(-40%)----(-35)
Special: can walk on water?

Name: Goliath
Effects: Damage+ , Health+ , Speed- , Jump- , Gravity+
Level1: (+70%)-------(+50)------(-15%)----(-8%)-----(+15%)
Level2: (+100%)-----(+70)------(-22%)----(-16%)----(+22%)
Level3: (+130%)-----(+90)------(-29%)----(-24%)----(+29%)
Special: unsure

Name: Nuclear
Effects: Light , Thorns (fire), Damage+
Level1: ----------------------------- (+100%)
Special: player has a posionous aura, radiation resistence, (when hitting the ground after jumping, blocks take slight damage in an area)

Name: Photosynthasis
Effects Energy Regen, Health Regen
Level1: -----------------------------------------
Special: regens only during daytime, and possibly when standing still?

Name: Cactus
Effects: Armor+ , Thorns , Health Regen
Level1: (+15%) ----------------------------------
Level2: (+20%) ----------------------------------
Special: gains health regen when in water

Name: Deadpond
Effects: Health Regen, Health-
Level1: (hp regen II)------(-20)
Level2: (hp regen III)-----(-40)
Level3: (hp regen IIII)----(-60)
Special: ?

Name: Human-Generator
Effects: Energy+ , Energy Regen
Level1: (+50)---------(en. regen I)
Level2: (+100)-------(en. regen II)
Special: unsure

Name: Bionic
Effects: Armor+ , Health-
Level1: (+20%)----(-25)
Level2: (+40%)----(-35)
Level3: (+60%)----(-45)
Special: has defense buff

Name: Barbarian
Effects: Damage+ , Energy+ , Jump+ , Armor-
Level1: (+15%)-------(+20)-------(+10%)---(-10%)
Level2: (+30%)-------(+40)-------(+20%)---(-20%)
Level3: (+30%)-------(+40)-------(+30%)---(-20%)
Special: bonus dmg when dual weilding?

Well thats all that i can think of right now, I hope that i helped

I'll look into these, some of them like Nuclear and anything that modifies armor i'm not entirely sure on how to do yet, but i will definitely consider adding the ones i know i can do.

the ones that have armor implamented into it, can be taken out of the equation, instead armor can be changed to health, like in the barbarian augment

true true