Mar 30, 2016, 06:36 AM
This is an interesting prompt! I do believe that they will add a Battle Tower or Frontier, as given hints in ORAS. If I remember correctly, in the Battle Resort, one trainer stated that they had plans to build a bigger, more professional battle league (In relation to the tower and frontier). This could have been a small insight to what Sun and Moon foretells, in which I would find that to be a great addition to the already-popular Battle Resort.
Your number one flying-type trainer!