I have many thoughts (I apoligize in advance if I repeat any ideas):
- 8-way Movement. That way, we can use the touch screen to move the character and we don't have to be bored with going in 4 directions.
- Customizeable trainers. We can customize our trainer's clothes and stuff, but I think it would be too much work. Our we can all be Lass!
- Have little itty bitty places in between major towns. Like in the TV show, they have side towns or locations we never see in the game (Like the castle in the Pokemon Mirage special).
-The day and Night feature, but with a twist! We would be able to see sunsets and sunrise. The light slowly gets dimmer and dimmmer or brighter and brighter.
- Natural Sound efeects. Water rushing at water falls or crickets in the background.
- Unique buildings. No more buildings that look identical, like Pokemon Centres or Poke MArts.
- Unique trainers. No more trainers that have a quintubledeeoppotoolop-tuplet.
- Random weather effects. Rain, snow, thunder, anything! Anywhere.
- Seasons. Self-explanitory.
- Using Wi-fi, you can use your PC to log on the computer and go on the internet! That's my favourite idea.
- Actual objects on the map. Instead of a Pokeball, the object itself would appear.
- Talk ot your Pokemon! Yeah, you may look like an fool in public saying, "Hay Snorlax! Want a Pokeblock?" but its fun.
- Food. Some foods give you pep and allow you to move faster, while others are fatty and... I'll let you guess.
- To mix in with the food idea, it can have campsites to cook fusions of various food items anywhere, anytime (Except cities, Officer Jenny might arrest you if you burn down the Celadon Mall. Now we love the Mall!).
- More Pokeballs. I want to see more uses.
- A thing I like to call a Pokemon Sanctuary. It would be only accesible after beating the Elite 4 and completing certain missions. You would go into first person mode and move in a 3-D environment, interacting with your Pokemon and the Pokemon of others. Only this is 3-D, not the other parts of the game.
- By downloading saves from RSE, it would make Pokedolls of your party in that game!
- Pokemon's mood changing.
- Battles with Mom! I'm so weird...
- A system which allows oyu to let your Pokemon out in the wild to accumulate items. It would have a tracking device and you would find it and keep the items it found.
- No borders in water. You can go around the whole continent but you may not be able to reach certain places due to cliffs.
- Keep the Turn based system. If its real-time, you are putting no use for the speed of a Pokemon.
- The music of the Overworld changes depending on what you are doing.
- Missions for money. I don't like to keep on fighting gym leaders again and again.
- Finding a certain puzzle which can take days or weeks to finish to find the location of a certain legendary.
- A garden behind your home to grow Berries or vegetation to use in your secret base. You would have to buy seeds at a plant-place-thing and grow your own plants. This also collaborates with the food idea. You can grow fruits and vegetables to eat.
- A downloadable extension for your D/P game. You can use the Wi-fi feature to get it.
- More battles of the legendaries, like in Emerald. But with more detail.
- More than one save file.
- Different aged characters, like 10 different characters. Depending on your age, you have access to certain things like vehicles, special bikes, and many more.
- ALOT of sidequests. I don't want to be too bored.
- Pokemon move when they attack. For example, Salamence or Dragonite opens its mouth for a Hyper Beam or a Swellow flaps its wings and goes airborne for a Fly attack.
- More new attacks. I don't want one new attack.
- The seas become more stable or become fierce, allowing you to access certain ares or disallow you to Surf altogether.
That's all I can think of right now. I may post again if I come up with more.