I have always wanted to be able to run a Westmarches style game. Using the Old World Style map bits, but I don't trust my players enough to just give them all dungeon master priveledges to draw up their map. Yes there is the doodles they can draw up with the freehand tool, but I am a bit stingy when it comes to mapping. Another thing this could do is allow players to edit a small sort of home base, filling it with all kinds of furniture and things they have gathered up from their adventures, without giving them infinite cosmic power.