Disable avatars for a specific user(s)

[EricR]

I have avatars enabled but as always there are the problem few who choose inappropriate avatars. Is there any way (short of messing with usergroups) to disable avatars for a specific user(s)? Specifically I would like a "user may not use an avatar" checkbox in their user settings so I can disable their avatars. Searched on here, vbulletin.com, and vbulletin.org, found nothing

Proposed solutions so far:
1) Create another usergroup that has avatars disabled
Problem = I have a paid subscription option as well, so this means I would have to create TWO new usergroups... one for while their subscription is active and one for when it runs out. No way to address simply resubscribing and getting back their avatars.

2) Punish everyone and moderate all avatars
Problem = Ugh, way too labor intensive. I want to address a few "bad apples", not punish the entire bushel.

There HAS to be a way to disable avatars for a specific user without screwing with subscriptions or usergroups. Even a crude conditional in the postbit (display avatar so long as userid is equal to user1 or user2 or user3 or ...) would be better than the current system.

Any thoughts?