1. corner windows. at the moment the only option is to not use walls or to place them so that the wall piece at the intersection looks like a mullion.
2. continuous walls of varying thicknesses. Now I don't mean this as a wall option, but if we could combine wall segments of different widths and have them "heal" themselves. I'll add a pic to better explain this later...
a couple wishes;
Re: a couple wishes;
3. doors with sidelights, or uneven double doors (configurable of course...).