I've lost faith in GameFreak at this point, and gen 8 has hit hard in order to get me buy it, so let's discuss what would make the game worth buying.
1.) features you would like added into the game
2.) what you would like to return in the newer games
3.) what should be cut out of the game and or needs to be reworked
Example:
1. Hard mode as an option, a more open game I don't care if story has to take a back seat so I can explore the region more I don't play Pokemon for the story, I play it for journey with you and your Pokemon.
2. Pokemon that fallow you/ride Pokemon no more random encounters, just give the Pokemon AI so they can chase you down if you get close to them or run away from you, maybe make it so natures effect this, like a timid Pikachu will flee from you, and brave Pikachu will chase you, if dragon quest can do it so can Pokemon. customizable trainer's and battle styles, and make the list of outfits better please USUM options we so bland, XY had more meaningful options, bring nurse joy's outfit back, and add her hairstyle and and color as options, make a playable Joy I'm not a huge fan of these, but for the people that like these features make mega/Z-moves available earlier on in the game, make it a optional side quest in the game that give you access to them, if you don't like it can ignore it and if you do, you don't have wait for it as long. Regional variants that extend past gen 1.
3. Handholding at least make it so if play on hard mode the game removes the tutorials, just make it stop, LGPE came out so shut the hell up about Kanto already, I love RBY but can't take it anymore, stop bastardizing Kanto already. Fix the EXP-Share make it optional, and make it so when Pokemon level up from it get less EV's and IV's, Or it give Less EXP, Or remove it in hard mode.