Good but could be better

The coin cap for gyms is a little ridiculous. I had a Pokémon in a gym for almost 3 days and only got 50 coins. There needs to be a better system or else gym battles will be useless. Maybe you could do something with the Pokémon CP. Depending on how long they are at the gym they could get a CP boost.
I would also like to see trading added to the mix. Trading would make the game more interactive and closer to the games/show.
Lastly, the gps needs to be fixed. I went on a 10 mile bike ride the other day and my 10k egg didnt hatch (with about 2k already done) and it took my buddy 8 miles to find a candy. I never went over the speed limit cap; I know this because my watch tracks my speed.

Sissy25252525 about Pokémon GO, v1.37.2