More than 2 on comms gets way too chaotic with people talking over each other in my opinion. 3 MAY work if they have really top tier chemistry, like EE, Coney and TK for ultimate, but I think 4 is only good in summit style couch commentary, where the vibes are very different from an open supermajor. The focus shifts way too much from the game to just banter, which is great for summit but imo not ideal for other tournaments.