It is now taking much longer for a site to launch. I know that SE prefers to keep the commitment fulfillment requirements vague (so it is not gamed?), but it would be nice to have some more clarification about this (does keeping it secret really helps that much? does it still make sense even after the changes made to area51 process?).
I have asked 8 questions with reasonable total votes on Judaisms but still haven't fulfilled my commitment. On the other hand, I have fullfilled my commitment to Music site with much less participation.
Maybe you need to edit the commitment fulfillment requirements for active users on other SE sites. Participating regularly (visiting the site once a week) and actively (asking a question or answering one once per week) on several sites is too much time-consuming. I am interested in the sites I am committed to, would like to see them launch, and may ask a question from time to time, but I guess this is not sufficient for committing to a site? Especially now that it takes much longer for a site to exist the beta phase. I can't understand what commitment means when SE doesn't tell me what it really means (and possibly keeps changing it from time to time?).
By the way, it is annoying to receive emails asking me to commit to a proposal while I don't have any commitments left.