Maybe go off a level and time thing? /born and /played are tracked so level > 170 AND born < now - X AND played > Y then forum_access = yes.
There are some really great fr00b players. Some of them are old school players, that upgraded, played, didn't like the expansions and openned a fr00b account.
They have a different perspective of the game (yes I am not a good example).
They are a part of our community.
Their input could be positive for these forums.