I got the final 3 boards from OSH Park today and assembled my latest version. It now properly supports VGA, although I haven't messed with this yet. I moved the uart pins to arduino pins 6 and 9, as RX and TX respectively. I found that, strangely, the arduino Leonardo does NOT like software serial for my shield! It does however work great on my arduino uno. I have no doubt that it would work great on almost any other arduino board, and that the Leonardo issue can be solved.

I improved on my arduino test sketch, so now my arduino draws some cool trees and rainbow lines. It's pretty cool! will put up my arduino sketch soon.