With the addition of Wonder Trade, people have been getting random levelled Pokemon from people all over the world. What if we take that mechanic and build a challenge around it.

You start the game off as normal, you receive your starter and go through all of the excessive talking. The twist is that you have to Wonder Trade every Pokemon you catch or receive in game. I.e. if you start with a Froakie, as soon as you are able to Wonder Trade, you must trade the Froakie away. Afterwards you continue the game as normal with whatever Pokemon you receive from the trade. You are unable to Wonder Trade any Pokemon that you have already been traded online.

This is just an idea so feel free to give me feedback and (constructive(hopefully)) criticism. Or even suggest your own ideas!