Get in here

>Living world
Like with the vehicles we saw, with people just living their lives, maybe more people in each town, small in-game events or even huge holiday festivals to partake in

>Seasonal/weather/day-night cycle
A seasonal cycle like in Gen 5, with the seasons changing every few months, a weather system that can cause random rainfalls/snowfalls etc. And the classic day-night cycle. With each change prompting a slight change in wild Pokemon availability, npc dialogue or maybe even a change of their outfits.

>Improved Character Customization
Adding more haircuts/colours, clothing options, jewellery, glasses. Being able to get the previous protagonists' outfits
going hatless
No gender restrictions

>Having Pokemon walk behind you
Self-explanatory

>Platinum teir Post-game
More Pokemon
More scenery
More characters
The entire Battle frontier
Your own fucking mansion to decorate and use as your personal mother base