Why do you think gen 4 remakes are gonna be awesome?
Did you forget oras?
We are most likely gonna get diamond pearl remakes. Giratina distortion world would be "post game" content.
No battle frontier.
No camp.
Dex would be the same, maybe they will only keep all the mons before gen 5 in the game to fit their new design plan.
Contests will get some silly revamp like the one in oras.
Gigantamax forms for starters and popular sinnoh mons. Most likely lucario, garchomp, magmortar, electivire, togekiss, dusknoir.
Then again, it seems highly unlikely we will see a return of this feature since we would need areas that can allow this phenomena to occur, unlike galar.
Same grid based world.
Etc.