is B:ACL ever coming to Android?
anyway, for different IP's i'd love to see them make a DC fighter with a similar size roster to MK2011, i loved playing as the DC characters in MK vs DC.
As for different genres another Shaolin Monks type game would be great, or a(n) RPG, remember Konquest mode from MK D? I loved that! Use that as a basis of a game, and flesh it out a lot more.
Maybe even an uncharted style Action adventure would be a good genre to try.