It's been a little while since I've played with this design, and I enjoyed getting back in to it. To be honest I'd like to spend a few days working on the model (I'd probably tear it down completely and start from scratch) but for now this is looking pretty nice.
Incidentally, T-splines continue to be *really* weird - and super cool. I really wish I had a more powerful computer; I suspect that would improve the experience significantly.