Most of my problem with the graphics of this game, other than the fact that most everything looks like it doesn't have any shading, is the textures on the walls. Most of them are hideously resized in some way, and there is no support for edges, so screenshots look like an engine test gone wrong. Get a lot more tile variety, make it more obvious that edges of walls are supposed to look like edges of walls, and tone down the resizing on the stained glass windows. It won't save the graphics, but they'll look better.