Why does it need to be live to be exciting? NASL is filmed being cast live, and delayed a day for three reasons:

  1. Provides more flexibility for the players schedules
  2. Allows time to edit the video, which allows higher production value
  3. Prevents the players from cheating by watching a live stream of the game.

I agree casting replays isn't as exciting (because the casters often know the winner), but I don't see how a delayed broadcast of a live casted game is any less exciting than something fully live.