>>37059585Sinnoh regional forms for gen 1-3 Pokemon.
Secondary types for the lake trio (just so they aren't just pure Psychic typed).
No HMs (Poke ride system like Alola, using mainly Gen 4 Pokemon)
Gym Leaders doing stuff (Similar to how the trial captains, working other jobs and such, more personality)
New Mega Evos (Or new evolutions for older Pokemon)
All gen 1 - 4 Event Legendary Pokemon get post game Side Quests, could allow for more interactions with Gym Leaders/E4 members.
Expanded upon Distortion World.
-This stuff can fall under Gen 8 hopes as well:
Removal of Trade Evolutions, either make them an item, level, friendship or area required instead.
All Normal/Flying types having the Normal Type removed.
I want most Hold Items tied to Evolution to be removed so inventory isn't clogged up by 10+ items that only affect one Pokemon.
Expansion on moves affecting the battlefield like in X/Y, just make it a visual change, with the field getting wet or muddy, or burnt and even decimated.
More detail given to newer Pokemon, less cartoon like (Think Pidgey's feathers vs Fletchling's feathers etc)
More unique animations for using moves in battle (Pokemon kicking/punching when appropriate etc)