As long as they are changing stuff I'd like to see Twitter move from counting the total number of characters in a @username to having them count instead as only

As long as they are changing stuff I'd like to see Twitter move from counting the total number of characters in a @username to having them count instead as only a small fixed number (say 2 characters) in a similar fashion to how URLs no matter how long or short count as 22 characters. This would put all users on an equal footing and could potentially decrease the number of hacking attempts on those accounts with the shortest usernames (which is apparently a problem).