That's a good idea, and I don't want to complicate your life, but you are right about the importance of change logs if we're going to have limitless edits. I also worry it could fuck up discussions if the op is editing on the fly while people are responding to the original text. The current limit is a nice compromise. I'm really talking about a different type of post, not one that is necessarily meant to invite discussion. It is probably too much to ask.