My ideas are:

-100% self-inflicted damage
Gains "rocket fuel" on kill, once full press mouse 2 to do a "rocket bounce" (aka harmless sticky jump)
explodes when landing on heads of people, instantly using a rocket bounce for free
explodes on kill

note this would only work if it was a secondary. also note that each explosion does 100 damage.

its a nice demo thing you made...
i was thinking... WHY not turn it into a misc for demoman and scout?
it looks perfect

Nah you see, i dont like how he can supposedly walk on it...maybe the stats should be
+10% in length when rocket jumping
-30 walk speed (Because it'd be hard to walk on those)
(Toasty's idea #2)
You take 10% more damage on wearer if using the Sticky Jumper


These are just my ideas :3

Id say:
Holding "Jump" charges boots
Longer charge means higher jump
Mid-air use greatly reduces jump
Runs on fuel which can be regained from metal
Longer charges use more fuel
+20% fall damage

10 seconds to arm a stickbomb? dayum

Grants an explosive double jump (Jump height is half that of a typical rocket jump)
On second jump: -65 HP (Nearby enemies also take that damage)

Press jump after first initial jump to make an explosive jump
+50 Health
Hold jump while explosive jumping to decend slowly
100% Melee Critical chance while Explosive jumping.

I thought a while about these stats. Please tell me what you think!

Pro's:
(Automatic) Slower descend time.
+10% jump height
(The pro's work together to make it feel like less gravity.)

Con's:
-10% explosive resistance.
-10% fire resistance.

It's a bit like the B.A.S.E. Jumper though, don't you think? Please tell me what you think!

+slow decent time
+15% more health
+stickies blast you 50% higher
+25% better charge turning control
+no self inflicted damage from stickies
+landing on people decreases the enemys health by 50%

+Uses ammo for short bursts of airtime
+Flying over target will cause short periods of afterburn
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-50% pushback taken from stickybombs
-25% more pushback
-User must jump first in order to activate rockets

I feel like these would go well with an Astronaut-themed Demoknight set, maybe more geared towards movement instead of resistances

This really feels like something Vavle would make and add in a Space update or something, good work!

passive
turning the normal ammo capacity into rocket fuel
ammo : 100
medic and dispenser dont but give fuel insted

pros
can fly

cons
uses 5 fuel per second
cant get healed by medic or dispenser
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pros
rocket jump increases by 50%
no damage from sticky bombs
land on target will set the target on fire for 10 sec

cons
landing on the ground will set you on fire for 10 sec if not hit a target
_______________________________________________________________________________

pros
can fly like noclip ( that you dont toggle on or off )

cons
cant fly through world

^this kinda needs work

3x jump height
can double jump
replaces sticky bomb launcher

Demo approves of this discussion.