After reading all of the comments on this post I think I finally understand what you are setting out to achieve. I am intrigued by the ideas of "multiple identities" and keeping control of identity related data by storing it on my computer rather then the websites server but, in your initial post, that wasn't very clear. The follow up post cleared it up some, but not much.

Additionally, I think it would be best to focus on these issues rather then any UX or UI changes. What you've presented isn't game changing enough and, as you can see below, most people are indifferent to it.

All of that said, I am certainly interested in being a part of this project. I'll contact you for more information.