Both, actually - we have some real designers on the team to help examine submissions, as well as people versed in IA/UX and accessibility. We (the board) have gotten lots of feedback over the years, and really want to make something more accessible, welcoming and modern.
The team vetting the designs is not 100% board members, intentionally so - as I said, we have domain experts as well as psf members, it's a small team to keep the noise down, but the goals and thoughts are outlined in the RFP as much as possible.
Well, not really :) There's a difference between having designers, accessibility pros and others able to review the proposals and those that have the time to do the work. All of us are volunteers, and our time is limited.
