I suggest to create a new gather rule:
"If you changed your nick recently make clear everybody in the gather what was your nick before. If it did not occurred prior to picks captain have right to request regather."

It has become necessary because of such defective community's members as OneHit.

Spoiler

And of course admins will reserve the right to punish for violations

Oneshit at it again, why not give 10 year ban get over with it?