Given the bad ratio of actual edits to troll edits, it's time to consider if we should enable 'login to edit'. This would help reduce troll edits and might help keep the community alive.
While we're at it, we could open chat to help the responsiveness of help from other users and not just admins - but be warned; due to the lack of admins it will be mostly un-moderated but as you must login to chat, troll accounts can be banned.