This isn't so much an idea for the game as it is an extension to the website, but I think there should be a way to look up players stats such as gym badges and hours through a browser. It would be convenient to keep track of things, but also it would be good if you didn't need to be logged in to view the stats, which would mean these stats are shareable (e.g. if you wanted to put a link to your PRO account in your Steam bio).