Ideas*
1. Customizable Trainers
--You should be able to customize trainers, and get more clothing throughout the storyline and special shops.
2. Own Your Own Shop
--After the main storyline, and all side quests are finished, you should be able to run a shop, that eventually expands into a company.
3. Own Gym
--You should be able to get your own gym after the main storyline, and you get a call whenever there's a challenger. The challenger will only stay there for a certain amount of minutes. The amount of minutes are the average of the trainers Pokèmons levels. When the time is up, he/she goes away. You can also customize the base to make it harder for the person to get through, meaning it takes time to get through the trap, and then then the wait time activates. You should also have a secret passage in your room in your moms house to the bunker. You should also be able to create pixel art (and add colors) for your badge.