The first thing I would actually suggest is that you get a tileset that works together, and don't put things like paths which go on grass onto mountains. I recommend that you go back to normal colours and avoid pink trees and brown water and so on. Then you're going to need to learn to map a lot better. Your routes are not playable. The player is simply going to walk through empty maps with open spaces and it's simply boring, as well as seeing hundreds of tile errors.
If you need help with any of these things do not be afraid to contact me. I think you need to hone your skills and find a direction. It's good to be original, but remember you're still making a Pokemon game. And you still need to worry about clarity and making the game playable.
Thanks for your input, as always it is appreciated. =)