I can do this with P2s... In large number. I like Peter's board, and it will be possible to do demo's with it, but as a final design it would be a royal pain.
And of course I want 28nm.
I can easily imagine several ways to get it done. With your permission, I would like to open a discussion with Intel... not representing Parallax, but just trying to see if we could find a mutually acceptable direction.