I agree mk wasn't my favorite gameplay exp (sf2!) and ki isn't comparable to the depth of a vf or tekken. But to me when looking at older games its not really about how did this game play, but what was the world they were trying to create. A perfect example would be mario brothers. In the 8-16bit days mario was limited to a sidescroller if you wanted to experience a large sampling of his world (although mode 7 would've been interesting in a mario setting). Then when the tech became available Nintendo droped him in a free roaming 3d world. This is an extreme example but the point is the "game world" or environment is whats important to the FRANCHISE. What you as a developer do within that world is what makes or brakes a game.
On this basis I say the FRANCHISE of Killer Instinct has HUGE potential next gen and frankly the game world to me is a lot more appealing than any other fighter on the market. What Rare does with it is up to them but I have faith they can produce a system seller. Perhaps not a system seller to those that dont like the GAME WORLD, but a potential system seller to those that find it very appealing. How many gamers find it appealing? Well judging from the initial success it had in the arcades I would say quite a few my friends, quite a few.
Agree?
NOW BRING OUT THE ANNOUNCEMENT ALREADY!