Having a npc to set if you want @main, @showexp and @autoloot on by default on not (per account) has been suggested before and it's easy to do, I should add it one day, don't even need to look for a premade script I know how to do it, since currently we put those on by default via a script already.
@storage is a no go.
As for name change I believe it was answered, it's a GM service, either at fairy auction or with a donation of 5$.