It's possible! But I still find it comforting to know that if they ever do make a UCM expansion for the resort, which is far more likely now than ever because of Darkmoor, it's basically first in line, and not much is queued behind it currently.
Others are right though, Dark Universe could end up like Toon Lagoon or Suess Landing without a proper expansion at any point. I believe that timeline would be ... not ideal.