What about BfA are you most excited about?

One of my guildmates told me he hasn't pre-ordered BfA because he's not excited about it. We're not PvP types at all. And since he's my MT, I'd like to sell him on it! I'm not horribly excited by the Horde v Alliance rehash either, although the cinematic was good. So I'm looking for your thoughts, what are you excited about?