I think we're on the same page. Each founder already has to answer "Will you live in the Bay Area January through March 2015, if we fund you?" and "Will you commit to working exclusively on this project for the next year?" in a drop down in the new founder bio page.
Makes sense. Perhaps the two questions are there as a redundancy. Some people might answer "Yes" to the first question, but then "No" when asked in a slightly different way. In the first question, they're just answering for themselves. In the second question, they're taking a deeper mental look at their team and assessing if anyone on it isn't up for the move or the 100% commitment. To whatever extent there's conflict between answers to A and B, that's a sign that some people aren't being totally honest in answering A. (This is purely speculation, of course).