A real drum map would be awesome. I mean just as the features in Cubase that allow to call on a specific output note, MIDI channel and MIDI output (VSTi or external) per physical key of your MIDI device. I guess it could also be achieved by beefing up the splitter/multi instrument features, which would also be cool to target several channels of the same instrument (Kontakt multi, Maschine sounds...) from a single track.