What pokemon needs is a bigger focus on the end game. More content basically.
We don't need all regions in one game(though that'd be neat). Perhaps a bigger world.
I think Sun and Moon are taking the right steps though. Bigger world(from looks), no more chibi, more focus on detail, and a very polished battle system. The focus on popular areas is great as well. I enjoyed the France theme in XY, and can't wait for the Hawaii theme.
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12/22/2016- Made a bet with Ganoncrotch that the first 6 months of 2017 will be worse than 2016. A poll will be made to determine the winner. Loser has to take a picture of them imitating their profile picture.