I do wish Diablo 3 had some kind of end-game random map system, but that'll probably be for another day. (If ever)
Maps would be nice and also if they come out with a endless dungeon similiar to what Torchlight did. I gave Torchlight 2 the "old college try" but it just didn't compare to Torchlight 1 imo. It's too bad Runic didn't come out with co-op for Torchlight.