"[Idea] A visual notifier that somebody is waiting at a raid"

#PokemonGO: Niantic can we maybe have a notifier at gyms that people are waiting to battle? I was thinking as my buddy and I sat in a mall for a level 4 raid that was half way through that it would be nice to let other players know we were there waiting for a group to battle with. Maybe something to check in the gym or something, or a little indicator on the gym that says there are players near waiting for a party. Having a waiting lobby of some sort where you can see other players would be awesome. Thoughts everybody?[Edit: spelling] via /r/pokemongo http://ift.tt/2t7eGnf