It'd be great if the new forum implemented Stackexchange-esque comment edits.
Not in the sense that everyone can edit your comments, but that there's some kind of changelog containing all the edits you made to a post, visible for everyone who's interested in it.
Is this actually a feature in the new forum?.
I don't think you can prove it. IIRC, theymos (or an admin/mod) said that the "edit history" only shows up after the 5 minutes, so they can't see what was the post if the user edits it before that time.
That's pretty shocking if that's actually the case. Shows how outdated some of the parts of this forum are, and how lacking some admin features are...