Krueger is easily a fave of mine.
I really hope that in the next game, they continue the whole guest character thing.
Maybe not Freddy, or even Jason Vorhees.
I'm thinking someone along the lines of Ash Williams, or Wolverine (he'd be PERFECT, just adapt his moveset from MvC, into MK), or hell, Deadpool, just to add a pinch of comic relief.
I understand WB owns MK, and would probably rather NOT have Marvel characters in a game they publish, but I find that Marvel characters translate better to fighting games than DC characters.
We've had three attempts at a DC fighting game, and all of them have either been bad (the SNES one), mediocre (MKvs.DCU) or just plain awkward (Injustice), so I think DC should just... yeah... no more DC characters in fighting games.