Vanquished
Android Expert
I'm not quite sure how it would be done, but some sort of reversed tower defense game would probably be pretty interesting. I like how Guns'n'Glory made it so you could move your "towers" (men) vs. having set locations. Having a game where you have to control units to get through a gauntlet of towers by both avoiding and attacking certain locations in order to get through seems like it would be fairly entertaining, and also slightly different from the current mound of games in this genre.
