Cyber (Scorpion, Reptile, Ermac (lol! Could you imagine), Smoke) because I know it's going to happen eventually. I don't really get this cyber fad. It's ...pointless.
I really just want some skins and maybe a few characters that are new. I don't really care for anyone in the MK4 and on to be like OMG I WANT THIS GUY! Except maybe Shinnok for interest. (And I want Rain, and he better be epic)
And I want NRS to host some Create a Character contest. Like you give them a story, bio, movelist, and drawing of your character then everyone votes on themortalkombat.com and it gets made DLC. I doubt I'd win but I bet I could get a good player thought of.
But I don't think DLC characters will matter. I figure they'll be automatically weaker than on disc characters so nobody is like "ITS NOT F*****G FAIR! RAIN IS A G******N POWERHOUSE BUT I DONT HAVE THE MONEY TO BUY HIM! F**K YOU NRS!!!!!" So I think NRS would kind of keep them under par with the main cast just to protect themselves from backlash because they put out a godly dlc character only people who have the money can get.