Currently, the only thing for me that is close to a dealbreaker is the issue about not being able to delete comments. If that ability is restored, I should be mostly complaint-free for the time being.
One feature that I would like to request, however, is the ability to more easily retrieve old private messages -- perhaps separate inboxes for comments and PMs.
We're working on restoring delete for childless comments now and should roll it out this week. That will probably be a two step process - retract → delete.
I understand that User:Alicorn is working on making the case that we should allow delete for comments with children.
We have no current plans to work on improving PMs. We agree it'd be cool, we're just not excited about it (but… it's open source - don't wait for us).
Recent site changes have generated more unhappiness than I expected. This post is a brief note to share resources that will make it easier for concerned site users to track what's happening and what we intend.
Some reflections:
… but try to be polite.