>>30234112I say it because there's no reason to assume any changes at all between Kanto as in RBY and Kanto 25 years later. Same gyms, same routes, same Pokemon available, same general plot, same EVERYTHING.
It would just be RBY, only with all the buildings painted chrome. If you see it differently, explain what changes you would expect to see and how new pokemon would fit in, inevitable cover legendaries included.