Guys, there should be some way to handle name change.
I know I can create a new account, but there's no way to safely transfer all the settings without disrupting service.
Could you consider developing some migration import/export functionality to let users to copy the entire config on another account - it's just a matter of plain copying and replacing account name everywhere.
Or may be the simplest way is to allow an alias - additional "account name" that would internally translate into the real account name?