smoke should always be in human form because he would look more badass than a cyborg. i also think smokes spear wasnt THAT bad of an idea...he just needs to use it a LOT more differently than Scorpion and the spear should look different.

one special move would be smoke doing mavado's grapple hook kick xcept he'll do it with his spear and double or triple kick the oponent.

the second special move would be the classic teleport punch. he'll disappear wit a trail of his smoke/mist and reappear next to the oponent to uppercut or punch the oponent.

the third special move would be smoke surrounding himself with smoke and if the oponent comes near him, he/she will either be stunned, stagger backwards, or b blinded.

smokes fatalities:
smoke's fatality could be him disappearing in a mist of smoke. the oponent will then start to be smoking and eventually blow up.(this is similiar to liu kangs fatality in MK3 or wen neo jumped into the the agent in the matrix)

another fatality could be smoke doing a smokey firball thingy. the fireball would start to surround the oponent. there could be a lot of blood coming out of the smokey mist(you wont be able to see the oponent)and/or bones/limbs/organs. then the body wood disappear...in a pool of blood.

post some more ideas in the thread.