There could still be an Elite Four. Every time you reach the final tournament there are 7 elite trainers(you making up the 8th seed) who always make it so you have some idea who your going to face.
But here's where it gets awesome. The game could randonmize the seeding and the AI victories so you never battle the same Elite 4 twice.
The 7 elite trainers could be Red, Blue, Lance, Steven, Wallace, Cynthia and Alder.