More than 95% positive that it will be one on one.

If you're more then 95% sure, then why don't you just say '96%' or '97%' instead? ^_^

Could go either way. If it goes four-player, hybridize the MK system with Power Stone and Thrill Kill.

Power Stone is a great game,but i dont want it implemented in MK8 as the main mode,as a minigame yes.

MKSM's Vs. mode was like a 1 on 1 powerstone. Personally I don't like that type of gameplay where you can run around collecting objects from the background, health items, etc.

I like the plain old 1 on 1 style. Having a tag-team option would be great however.

If it turned out to be like a Thrill Kill game, I think only then would the four way fighting would work. Otherwise, keep it 1 on 1.
It would be nice for the return of the classic fatality system as well. No custom system.

2 on 2 whould be cool like shalon monks but teams like tg team that be coll