Wow, this is huge.  This means payment systems will still be operating on core?  Imagine if payment systems are operating on a chain with the least hash rate... would seem to be a security issue.  I think the ability to control the name bitcoin is half the battle though.  Look at ETH and ETC, it was the exchange's agreement that set that in stone.  If ETH had ended up getting the name ETC I don't think it would be nearly as successful as it has been since the fork.