Suggestion, not critical: perhaps a way to show that a post has been closed/deleted, in the style of the "X New Comments" update at the bottom of the thread? [more inside]
This is perhaps indulgent, but it would be potentially useful in ask.mefi if the instigator of the thread could post just once after the thread has been frozen. Some questions resolve after several months, and it would be a possible benefit for those googling for information to see closure, i.e. "this is what ended up working the best, x was right" or what have you. Perhaps this is just imposing a false narrative closure on messy reality.
What does one do with an updated link for something that's already been posted, after the thread's been closed? (More inside...)
FollowupFilter? I was using the subject of this thread as an example in an email today, and while researching it I noticed that just today there was an update to this story. The original thread is locked, but I not sure this is FPP worthy.