Basically, I don’t think near-empty servers should have multiplayer-required mini games pop up. The people on these servers are there basically grinding without the distraction of a ton of people. These types are more likely to take a break from say, grinding Typing Derby to play a round of Target Practice. If a multiplayer game like Plane Wars or Chainsaw Deathmatch pop up, it’s basically useless to the 1 player in the plaza.
Something like those ones don’t show up unless the plaza is half full or better would be good probably.