Quick thought. Could you possibly add a thing that says "Edited" if so, such as a certain largely known site. I love the forum layout but feedback was asked for. That's the only thing I can think of. Otherwise, great addition and a nice way to prove that maybe you guys are doing something despite popular KaW belief.
It seems more reasonable that they want to allow the fixing of small errors such as BB codes, etc. But they dont want people going back and editing posts that resulted in some sort of trouble, whether through ToU or in-game.