This seals it. SP decks are going to rule next format. And GE is indeed going out, if they do change the format, so UxieX is probably going to be the better engine. Though I'd combo Uxie and Staraptor.
Champion Hall also adds yet another stadium you need to waste hours on thinking about which to put in your deck. Snowpoint, TGHQ, Contest Hall, and Champion Hall.
Did somebody else realize that the new Electivire is crappy, since the X wastes your attack with it's power?