ST- what format do you use? Anyways, you could totally use this for the walls, if CocoaSpud and the artists around at the beginning (maybe Ziroc?) had just doubled the graphics of FRUA instead of stretching them...if only I were doing this 10 years ago.
I haven't tried this on any larger graphics yet, but I think I'm going to do some resizing of FRUA dragons and giants to see what they look like.