Quoted By:
>Sequel
>Updated Dex (Start with what was in Kanto in HG/SS and work up from there)
>A few new Pokémon before the next games in 2019/2020 with will be the new Region with the rest of the Gen's new Pokémon
>Updated Gym Leaders, including a replacement for Blaine, and Janine still replacing Koga
That's literally it. Just the expected update to the gyms and region variety that is expected from a sequel. (This is assuming its a sequel based on the leaker saying that Red and Blue were not the main characters, but rather side characters like in Gen 7)
Thats all I expect for it to be justifiable. Anything else (New areas, plot, ect) is a bonus.
Basically, I am just asking Kanto gets the B2W2 treatment. A sequel to make the Region fresh and shine. You can't ask for miracles, but I think at least that will work out.