Having all this stuff (multi teir(is this right?) levels, chess game, puzzle mode, background weapons, ect.) yet keeping the same exact shallow fighting engine of MKDA.

yes, that would definitely be the worst. i really hope this message gets around to them.

I think it's absurd to say that "adding this character would ruin MK:D." I mean, there's an easy remedy: Don't use that character.

I think the absolute worst thing that could happen to MK:D is to half-ass the main fighting mode. It's pretty hard to enjoy a game by yourself when it's either impossibly difficult or ridiculusly easy. Just my opinion.