I believe that everyone should have the ability to REQUEST a name change but every request should be handled on a case-by-case basis and not every request would necessarily be approved. I don't think this would get terribly chaotic as long as there is a mandatory usertitle/signature for a month that says "Formerly known as XXXX"
Pretty much agreed. You should be allowed 1 opportunity to have your name capitalized if you like, as that would help me a lot
Regarding removing letters, most names with letters are taken due to the fact that the original name is taken. If that account is obviously no longer around, possibly exceptions can be made.