sort of "no tag" allowed?

[uZu]

Hello,
dunno if this is the right place to ask for this, but from time to time there is some random players or dedicated trolls who join and then choose a name with, in my cas, the OfC tag.
It can be fun, it can be "who cares", it can be a lot of thing, it's just that sometimes, when its a patent cheater or troll, it feels not right.
I do know this is quite regular and perfectly allowed in general pub servers but in this cas, where some clans have been "officially" been set, would it be feasible/desired to kind of lock the tag and not allow a general use?
Just a question, i'm open to discuss the point.

[adminless]

if you want the tag can be registered just like any other nick so only the people with the password will be able to use it. the downside is that then it would require all of your team members to use such password in order to be able to name themselves as such beside the fact that people could always just "squat" it anyways (ex. *OfC*, -0fC- etc) so think about it if you're interested.