Right now it is impossible to see if a CL author can submit or not from Gerrit CL page.
Either make Gerrit show such or just make trybot also in charge of submission?
Brad said in the mailing list thread:
We could have a bot that auto-rebases and auto-tests +2ed CLs, and if they're not merged in N hours, it could add a reviewer who has +2 access, leaving a comment at the same time like, "This CL is rebased & tests pass. It needs somebody to press submit."
(unless the CL had some sort of AUTOSUBMIT=true comment, in which case it'd just happen)
The merge not brought a modicum of sanity to a really bad situation. We
had a regular occurrence of 2 changes which passed tests independently and
didn't literally conflict at the code level, but would fail tests
together. Now we almost never hand-merge.