I would like to be able to place the coast line, river or main road by hand and then generate the city around these features. This would make city maps generated from Azgarr's Fantasy Map Generator cities to better match their surroundings and usually when I'm generating maps for my games, i already have some of it's main features established, so iterating on details would be faster if you don't have to rotate and sculpt every result before you see if you like it.