Ok, one of the many reasons that I love UO is the degree of customization available. When AOS was introduced, I went yaya because you could do some pretty cool custom house designs. Here's one I just finished on a freeshard (I care not to admit which).
For me, I love the optical illusions/mazes. Here's one based on a house I once saw on Sonoma, with my personal spin on it. I call it, "Gee, my house is sinking". Notice the illusion of the "basement". Actually, it *IS* a functional basement. *shrugs*
Oh, and I've found one of the best ways to play with custom houses recently is to use your own RunUO server. The Admin account is still tied to all the construction rules, so the results are pretty typical when you goto a non-god account. I just wish this plot was 18x18! (14x17)