@006: sandman already said, the threadtitle is editable in a normal vb already
@MJM: nope, it's not needed to change the IP.
The username is the important field, as a username change changes the userid of that specific post, and that will lead to that the new user can edit the post instead of the old one
Updating postcounts, would be needed, correct, thats something i will change in the next version