Hmm i was gonna suggest some themes, but i cant think of one. Cave-like is used, forest-like is in the old spawn,i guess we could just make a HUGE mansion, with every room being big and fitting, (A dinning room, corridors, stairwells, bedrooms, etc) and that could be timelapsed. but of course this would require the help of MANY MANY ppl.
And of course, the master disigner, and king of building, ytsen13