>>37224141Routes 47 and 48, Johto Safari Zone, Pokéathlon and the Battle Frontier will obviously be gone.
The Battle Tower from GSC will be replaced with a facility where you can battle Master Trainers.
Kanto will either be copypasted from LGPE with very minor changes like the magnetic train, or a 3D version of the gimped Kanto from GSC to "be faithful to the originals".
Unlike Red and Leaf/Green, Ethan and Kris/Lyra won't be replaced by literal whos. Likewise, Silver will still be the rival, but now he won't be so edgy. They'll also add a new quirky rival (think Bianca/Shauna/Hau) to share the spotlight with him.