My picks so far would be , avaya stadium in San Jose, StubHub of course because we all know NY and LA will have games, I am gonna go with Rio tinto stadium in salt lake city, I think that would be a surprise showing market for games. Aside from those three west cost I would go with Orland MLS , red bull arena for sure and then BMO field in Toronto and ether BC place or the new stadium in Ottawa.
That's so far, obviously we will see what comes with the next round of expansion for MLS, maybe Tampa bay or Detroit, st. Louis