I would love to see an mlb game with no fans. Keep the camera focused on the players and their interactions instead of all the shots of fans between pitches. Audio is where the game would suffer. I don't think a 420 ft moonshot in the 8th will have the same weight without the roar of the crowd (or the sudden groan/silence). Hearing the players audio would make it very interesting. How much yelling comes from the dugouts, chatter between the plate and mound, etc. The WWE is going on without fans right now. Some bits are still entertaining despite the lack of a crowd. Other bits are painful and embarrassing. Golf, Nascar, and the NFL would be the sports with little difference of no fans.