Chris Tietz brought up many of these issues earlier in the season, after witnessing a couple of preventable bike-on-bike collisions. Perhaps he can add his perspective, here.
I think all riders should be prepared to stop at all stop signs. While I appreciate when motorists yield their right of way to the group, these crossings work best for everyone when the cyclists are tightly packed. Somehow, we should figure out when it makes more sense to do multiple group crossings, with the riders and motorists yielding (and exercising) their respective stop sign rights as they should.
–Keith V.