I have a few things to say here.
First, every other site I am on allows name changes at your own leisure. Twitter, Tumblr, Facebook, as well as numerous forums, Blogger.
I've been an active member on BnB since 2010 - it is NOT clearly stated anywhere when you first create your BnB account that the name you choose is your be-all end-all name. Neither is it stated anywhere (for instance, in the form when you open your account) that one is not allowed to close your account and start a new one, etc.
I understand that the mods and admins are busy, but based on my experience on other sites I really don't think that changing the name on an account should be such a big deal.
It's just about making me want to leave the site completely - I really only come here now for my journals.