I don't know about anyone else but sometimes I struggle to remember which server or gym I've left my Pokemon to be part of a gym at. Is it possible when right clicking or scrolling over a Pokemon that is part of a gym it says under the name. It would display something like the below. [icon] [server Number], [Gym Name], [Gym Level] Server 1, Wyvern Village Gym, Gym Level 3
Or a command that you can do like /gym or /lookup and see a list of your Pokémon and have the server and what gym.
Like this idea, I recently lost my blastoise for a long time because someone put 3 mewtwos in a gym xd -3 legend ranks