Is it possible to create a force grow/shrink power, or something like this?

well if possible to scale the person and anim in a force power
that would be sweet
but for as far as i know
its just a dream

Well, then could you have it like a recon droid, where you put out a shrunk version of you, and the real character disapears, yet if the recon dies, you die?

You can deploy almost whatever you want with a dispenser. "You" won't disappear though, just like when you use a recon droid you don't disappear. And I think it could be scripted that the player dies when the remote dies.

Theoretically you should be able to use a .lua weapon to change your .msh, but I've never tried actually changing the model of something midgame, so I don't know exactly what would happen.

Could I just reprogram the disguise kit? And by reprogram I mean change it to a different msh that is smaller.

The disguise kit automatically uses the mesh of the first unit on the other team, and it doesn't like changing to a different skeleton/animationset, which I believe would be an issue here.

Well, here is the disguise kit odf:
Couldn't you change one of the highlightes lines to a particular msh? Then change the msh hieghts?

I tried that, the hud tag became that of the mesh, but the disguse itself didn't change, the log said the mesh wasn't there, but it had to have been for the Hud to make the tag.

Could you then make the first person of the other team a small/bigger version of you, but with infinite points to unlock ( or near that) and not playable by anyone, by setting his count in the lua to 0,0?

That's kind of an unprofessional-looking workaround, and the disguise kit, as Mav said, "doesn't like dealing with different skeletons"