Quote Originally Posted by Lithera View Post
Presumably, since they char would still be the same and not a deleted and recreated character, they would remain in your blacklist with their new name and not [Deleted] so the trolling would be potentially minimal. The confusion however? That's another story.
Precisely this; this is how name-changes work in all other games. No lists are affected, and the name gets updated everywhere.

As far as the social issue of letting your friends, raid-mates, etc. know who you are, it's the same as rolling alts has always been in games like this.