We have over 2500 unique ID's joining across the three servers each day, chances are the names will conflict, this would just cause issues.

Specifically changing the name towards one of yours and talking shit about it should be fine? Let's say you're a member, i changed to m0rgan and was saying stuff like; I AM FAT, I AM GAY, I AM A BEACHED WHALE, FUCK MY MOM LIKE A SLUT, would that be okay?