I don't understand why you would want to have a regulated exchange for a currency that's designed to be deregulated. That seems counter-productive for the entire BitCoin community.
"deregulation" isn't a religion. Just because there are options to use it in a way outside of regulation, does not mean all uses have to fall under it. Forcing that is like forcing anything else, and would be more statist than libertarian.
Bitcoin provides the option to remove yourself from the system if you decide that for you, in your personal context, it is the right thing to do. It's the option that matters, not just doing it for the sake of it to follow someone else's concept of what's important.