This sounds like a great improvement for the use cases that I am interested in! Thanks!

Sounds good to me. Thanks!

Neat thanks! That does look like it would help with our problem but I still think that expanding a group would be a useful feature.

One reason it pops up is that we put all develops as reviewers and then when one person actually decides to claim it for review they remove everyone else. We put all developers as subscribers, though, so that everyone stays notified when things change. I often want to remove myself as a subscriber so that I don't get emails about revisions I don't care about.