Quoted By:
So, let's say you ran Game Freak, about to develop Generation 7 with Gen6 completed. And let's say you were given relatively free rein to do whatever you wanted with the game, as long as it kept an E rating. What would you do?
I, for one, would do again at least one thing that Black and White did: no reappearances of older Pokémon before the player defeats the Elite Four. Pushing older Pokémon aside puts the spotlight on the new Pokémon, and makes the experience fresher to the returning players since they're discovering the strengths and weaknesses of a whole new cast instead of using Gyarados, Crobat, Nidoking, and Gengar yet again. I felt that made Black and White feel a lot fresher than Generations 3 and 4 ever got a chance to feel.
I would also give every "event" Legendary an in-game capture event. And not at Level 100 either. That disappoints me about some of the Wi-Fi Legendaries: I finally get to use Deoxys for the first time, but I didn't catch it, I'm not training it since it came at Level 100, so it doesn't feel like it's mine. I might even give some of the more iconic ones, like Mew or Arceus, completely in-game capture events, with no distribution involved. Post-Elite Four, of course.
I haven't really had a rival that I liked since Generation 2, so for a rival, we'd take inspiration from Silver. He's not the player's BFF, he's not traveling beside you, he's a selfish figure who gets in the player's way during points on his own journey which is separate from, but occasionally intersects with, yours. Maybe he even joins and becomes a leader in the evil team before the end.
Speaking of the evil team? In my opinion at least, the way they were handled in Black and White was best yet, but I'd go farther. Have them still be a threat after the Elite Four. Keep them going after the traditional main game. Their main plan might even be well after the E4, with your team's levels in the 70s or 80s.