I see no mentioning of the Reopen queue.
The main thing that bothers me with that queue is that once a closed question has been edited, it enters the queue. This leads to many Leave closed clicks because a question that is closed as a duplicate shouldn't obviously get reopened after some grammar fixes...
One thing that could be useful is to show who actually did the edit (I couldn't find that at least in a convenient way). But another option is to take it one step further and either:
- Don't allow people other than OP to edit a closed question.
- Add a very visible message stating that this is a closed question and edits should be meaningful.
I think that allowing only OPs to edit closed question might sound extreme, but if you think about it, only they can really edit the question to make it on-topic. Whether the question is closed as a duplicate, needs details or focus, how can anyone else add details to make the question not a duplicate or more focused. If a question got closed, it probably means that only OP can save it!
Another, "softer", approach might be to allow edits from everyone, but only edits by the OP will send the question to the Reopen queue. Or, add a tick-box for anyone other than OP to mark if they believe the edit was significant enough to be sent to the Reopen queue.