No new nick names with numbers in them.
Keep active characters with numbers in them due to grandfather clause.
Do normal maintenance to free up existing names such as purge names of people who are have cancelled game N (6?) months or longer and especially those with accounts that have no characters above N (50?) level.
Problems with numbered names:
1) L and 1 look too much alike. How many times have you tried to send a tell to someone trying to figure out what's a number and what's a name?
2) Unrealistic role play in these names for the most part. Yes I agree there are exceptions. The existing rule helps but it's utterly stupid to have peter1 peter2 peter13 etc., and l33t speak names kinda take away from the environment and make us look like IRC or a BBS or something.
-- Munkeezon