Engineer set.

Primary

The Stealthy Scavenger

A can of rat poison works wonders as a crude suppressor as I get my metal. Now if only it actually poisoned people...

+25% bonus metal picked up from ammo boxes.
+Silent killer: Kills with this weapon do not show up in kill feed and the dying player does not make a sound or leave a corpse (YER backstab death)
+Metal Magnet: All kills by the Engineer, not his sentry, will automatically pick up ammo from killed enemies
-25% less ammo for primary and secondary picked up from ammo crates.
-33% clip size
-25% offhand ammo on primary and secondary.

Model: https://steamhost.cn/steamcommunity_com/sharedfiles/filedetails/?id=274070688&searchtext=

Secondary

The Overclocked Overseer

Overclocking my sentry has some benefits, but the gun seems to be dismantling itself.

When wrangling sentries:
+50% fire rate bonus.
+50% damage boost.
+Sentry rockets are 50% faster.
+Instant reset when done wrangling/no sentry down time after wrangling
-Sentry takes 1% of total building health as damage as long as sentry is being wrangled, 3% when firing guns for one second, and 1% when firing rockets.
-No shield.

Model: https://steamhost.cn/steamcommunity_com/sharedfiles/filedetails/?id=131800691&searchtext=

Wrench

The Crude Constructor

Built to be destroyed.

+Each time one of your buildings is destroyed by the enemy, add one stack of Rebuild for each level of the building. Max, 50
+For each stack, your construction speed is increased by 5%
+After 10 stacks, your buildings auto upgrade to level two.
-25% health loss on buildings.
-Buildings cannot be repaired.
-50% construction speed hit boost.

Model: https://steamhost.cn/steamcommunity_com/sharedfiles/filedetails/?id=223812626&searchtext=

I've seen some posts for this weapon, and I think there's an idea for it. Let me take a crack at it.

The Soaring Eagle

For when you need to get from point A to point B without touching the ground

+Alt fire creates an explosion at your feet at the cost of one shot from your reserve ammo.
+/-Alt fire has a 75% damage penalty on both you and your opponents.
-40% less self push force.

Model: https://steamhost.cn/steamcommunity_com/sharedfiles/filedetails/?id=230&searchtext=

Any thoughts?

Set for the Heavy

Primary

Papa Wheelie's Perforator

No movement speed penalty while spun up.
Constantly move forward while spun up.
Cannot strafe while spun up.
15% damage vulnerability while spun up.
10% damage penalty

Model: https://steamhost.cn/steamcommunity_com/sharedfiles/filedetails/?id=155023476&searchtext=

Secondary

Gas Station Grub

Eat to gain 2 HP on primary hit, 10hp on melee hit, and 10% movement speed for 20 seconds (Math check. Should be the speed of a soldier, if my memory on movement speeds is off.)
Alt-Fire to throw down a small heath pack (chocolate bar)
Takes 40 seconds to restock
If no damage is done by the time the item wears off, automatically restock item.

Model: https://steamhost.cn/steamcommunity_com/sharedfiles/filedetails/?id=72636369&searchtext=

Melee

Cossack's Chain Knuckle

Gain a speed boost on hit.
Consecutive hits without holstering the weapon, missing, or taking a melee hit generate stacks of Combo
As long as you have one stack of Combo, you have a guaranteed minicrit.
Every third stack of combo is a guaranteed crit.
Take double damage from melee attacks while active.

Model: https://steamhost.cn/steamcommunity_com/sharedfiles/filedetails/?id=19433&searchtext=

Comments appreciated.

Pardon if my suggestions are reposts.

https://steamhost.cn/steamcommunity_com/sharedfiles/filedetails/?id=558352341&searchtext=

https://steamhost.cn/steamcommunity_com/sharedfiles/filedetails/?id=484062492&searchtext=

https://steamhost.cn/steamcommunity_com/sharedfiles/filedetails/?id=683794171&searchtext=

https://steamhost.cn/steamcommunity_com/sharedfiles/filedetails/?id=542364720&searchtext=

https://steamhost.cn/steamcommunity_com/sharedfiles/filedetails/?id=454796385&searchtext=

https://steamhost.cn/steamcommunity_com/sharedfiles/filedetails/?id=566198453&searchtext=

https://steamhost.cn/steamcommunity_com/sharedfiles/filedetails/?id=620453905&searchtext=

Weapon set for the Engineer

Primary

Ranch-hand's Railgun

Shots are 100% accurate.
Damage falloff is only 50% as effective
Fires tracer rounds
-33% clip size
-50% fire rate

Weapon model in mind is based off of the Pomson, with appropriate animations.

Model: https://steamhost.cn/steamcommunity_com/sharedfiles/filedetails/?id=220891608&searchtext=

Secondary

Hotwired Home Defense

Wrangled Sentries fire 3x as fast
Wrangled Sentry rockets reload 3x as fast.
No shield while wrangled
All the repair penalties associated with the Wrangler apply.
Should Crafting make more sentry types, more or less increase their fire rate by 3x while wrangled.

Model: https://steamhost.cn/steamcommunity_com/sharedfiles/filedetails/?id=131800691&searchtext=

Melee

The Rapid Replacer

On building death: Gain one stack of Redeployment for each level of the building destroyed. Stacks are not gained on buildings destroyed mid build, in the engineer's hands, or reconstruction after being moved.
Sapped buildings that die to the sapper do not generate stacks of redeployment.
Stacks are only gained once by destroying teleporters, i.e. if one is destroyed, and then the other one is destroyed without another teleporter being built, you only get the stack bonus for one.
As long as you have at least one stack of Redeployment, you gain +50% build speed and upgrade speed (compared to stock).
Stacks are lost upon upgrading or building buildings, or your death.
-50% repair rate.
-50% upgrade speed
-15% construction speed.
+10 metal to all building costs.

Model: https://steamhost.cn/steamcommunity_com/sharedfiles/filedetails/?id=88590266&searchtext=

Weapon set for the Demoman

Primary

The Expedited Explosion

+30% projectile speed
Grenade explodes on impact
+50% reload speed
-75% clip size
+50% self damage vulnerability while active.

Model: https://steamhost.cn/steamcommunity_com/sharedfiles/filedetails/?id=634665040&searchtext=

Secondary

Mann-hole Mayhem (shield)

+70% direct damage reduction (All bullet damage, explosion damage, and direct fire damage reduced by 70%)
-2 second shield charge duration
Bleed effect time extended by 3 seconds
Afterburn time extended by 3 seconds
Marked for death effect time extended by 3 seconds
Jarate effect time extended by 5 seconds.
Bleed Damage increased by 15%
Afterburn damage increased by 10%
15% Melee damage vulnerability

(For reducing standard damage by a considerable amount, but suffering greatly with DoT and melee damage.)

Model: https://steamhost.cn/steamcommunity_com/sharedfiles/filedetails/?id=225065346&searchtext=

Melee

Hooligan's Hammerer

Combo System
1st hit: Normal
2nd hit: Minicrit
3rd hit+: Crit
On Miss: Hit yourself. Idiot.
25% damage vulnerability while active.
(Hidden. Damage Vulnerability does NOT factor into self damage. Missed hits are always normal.)
No Random Critical hits
Cannot be crit boosted.

Model: https://steamhost.cn/steamcommunity_com/sharedfiles/filedetails/?id=428649231&searchtext=

Idea for a spy set

(Primary)

The Forceful 4-Shot

+Damage does knockback. More knockback done with more damage.
+Damage immediately ends shield charges
+Damage slows target 35% for 3 seconds
-33% clip size
-25% damage penalty

Model in Mind: https://steamhost.cn/steamcommunity_com/sharedfiles/filedetails/?id=59442357&searchtext=

(Sapper)

The Stealthy Saboteur

+Sapper does not do visible damage to buildings sapped
+Sapper is invisible when placed
+Sapper makes no noise
-Sapper does not disable buildings sapped
-Hidden: Engineers will still know if their building is being sapped

Model in mind: https://steamhost.cn/steamcommunity_com/sharedfiles/filedetails/?id=348752&searchtext=

(Knife)

Cruel Cutter

+25% damage against players.
+Each kill with this weapon adds 15HP to your total health, up to 160HP.
+Restores 50% of missing health on kill with this weapon, or 15HP, whichever is higher.
+/- Kills with this weapon dismember your victims, painfully.
-Stuns knife on a successful backstab (like hitting a Razorback)
-25 HP on wearer
-On miss: Knife swings 10% slower. This can stack up to 5 times. Stacks are removed on kill with this weapon.

Model in Mind: https://steamhost.cn/steamcommunity_com/sharedfiles/filedetails/?id=88693770&searchtext=

(Watch)

The Clean Getaway

+50% Extra Cloak meter
+Does not lose cloak when not moving (Although it will not regen cloak)
-Percentage of life lost while cloaked is applied to meter i.e. lose 40% of total health in one shot while cloaked, lose 40% of max cloak meter.
-Hidden: Uncloak when cloak meter is empty.
-Uncloaking in this fashion will mark you for death for 5 seconds.
-Cloak meter will not naturally recharge for one second after taking damage.

Model in mind: https://steamhost.cn/steamcommunity_com/sharedfiles/filedetails/?id=125106757&searchtext=

The Heavy Semi

Immovable Sentry
Buffalo Steak Sandvich
Hard Hitter

Before heading out into combat, eat your sandvich. Then start two shotting everything in sight with your crits on demand. Once the Sandvich wears off, kill any stragglers with the Sentry (as you will probably be at low health and need defenses) and get heals afterwards.

+Ridiculous damage output
+Gun covers the pains of a melee rush well
+Able to surprise just about anyone and kill them before they can do something about you.

-Minicrits hurt
-Minigun blocks healing, making it a pain
-If a scout gets the drop on you, you're ded.

The Best Damn Healer on the Server loadout

Crusader's Crossbow
Booster Shot
Outbreaker

Not only do you have the ridiculous overheal, but the Crusader's Crossbow utterly negates the heal rate penalty. Need to get that big Russian guy with the overcompensating gun out to the front immediately? Peg him with the crossbow, shove that medigun up his POOTIS, and get back out there! By the time you reach fighting, you will have already started overhealing the guy!

+All the fun of the Booster Shot with a lot less wait.
+The only syringe gun I can actually hit shots somewhat reliably with.

-Uber kinda sucks
-If you miss the shot you waste valuable time.