Sinnoh is just a poor copy of Hoenn
>weak prey Pokemon in most routes (zigzagoon and bidoof)
>"scary" predator for them (Mightyena and Luxray)
>Same as above but with bug Pokemon and Flying Pokemon
>Plot centers around a team trying to summon a god like Pokemon because they think it will be good
>A fire fighting humanoid starter lmao
>a autistic friendly rival
>a champion that helps you throughout the story
>coom bait professor assistant rival
>side legendary Pokemons that look similar to each other
>3rd game released to add postgame/battle frontier
But I will add Sinnoh did something different by adding ugly evolutions to old Pokemon.... instead of what Johto did and added actual decent looking new evolutions