Setting aside the fact that you're not going to be popular if you talk like that about the people who keep this place running, rest assured there is an audit trail for all moderator actions, that admins can review at any time. It's just not public.
As for edits, sure, other discussion boards prompt you to enter a reason when editing a post, and that might be worth considering. For now, I make sure to mark my edits clearly. Mostly on my own posts, because I hardly ever edit those made by other members. I'm more likely to ask them to make any changes that may be needed.