Let me know if there's a better place to put this (i've been looking for an area 51 meta site and haven't found one)
A three commitment max seems just a little restrictive to me. I'm currently commited to 3 proposals (the max), and each one is in varying stages of the commitment process. The one that's the closes will probably take another 2 months to get to the beta (if it stays at the same rate it's at), another one still has quite a ways to go, and another just started.
Given the long time frames on some of these proposal commitments, having a max of 3 seems a bit restrictive.
So, i guess my ultimate question is, what's the reasoning for restricting it to 3 isntead of, say, 5?