Audiogames.net is a really good gaming community with a lot of visually-impaired players who are often willing to give great feedback on accessibility in games. You might find it to be a wonderful resource as you work through these UI issues.
Somebody mentioned that one on the main page, too. Sounds very promising. Once I get a basic version built out, I'll definitely post there and see if anybody's interested in giving more specific feedback on it.
