There have been brainstorm ideas awaiting a fate for a few months now. As a moderator, I am guilty of neglect I guess. Perhaps we need some automated reminders that go out to the mods to deal with ideas awaiting in the idea sandbox?

Since you asked... IMO Bugzilla enhancement requests should be for things that make current functionality better. And, Brainstorm should be for new ideas.

IMO, It will be difficult to enforce any distinction between the two, and moderators will have to steer the ideas appropriately.