If display names are to allow us to change our names after the fact for legitimate purposes, why will new characters be allowed to change their names? I'd suggest restricting that first name change to at least a week, perhaps 30 days, and, even better, 24 HOURS played.
This would reduce, I think, a whole lot of griefing - people would have to "grief" using their mains, where their usernames can be known, instead of creating an alt and changing the name where they can remain anonymous.
It still allows for marriage name changes, RP changes and the like. I can even change my name because I prefer another. But i cannot create a new account and immediately use it for griefing - I must risk my main.
Is there going to be anything to prevent the use of offensive or copyrighted names? Can I use "Frank Sinatra", "Luke Skywalker" or "Philip LindenIsA-----"? Such things were not possible before, what's preventing them now? Voluntary abuse reports that must be investigated?