>>44898900oras has some dumb things because they had to make the game easier for children
>granite cave is just a hallway + cutscene, new mauville is literally a single room, safari zone is just a route>may/wally teleporting you to where you need to go instead of allowing the player to discover the side routes that connect back up to the main routes >free mega lati@s after 5th gymyou're also missing the emerald changes, like more double battles, better gym leader teams (looking at you, tate and liza), gym leader rematches. there also interesting things like artisan cave and a sudowoodo.
on the other hand, oras has a couple cool things like the abandoned ship is expanded into a way cooler place, dexnav, and soaring.