Spectate Mode in Invitation Code Live Matches
A good one to suggest is Spectate Mode in Live Matches (specifically the Invitation Code Live Matches) where if you put in the code and you are not the first one to successfully use the code, then you can spectate the current game that code was used for.
You can switch around which team to spectate on or have an in-general view of the Live Match game as if you're at the ballpark in person, and you can leave the game whenever you want.
Perfect for live streams and a chance to be a commentator in the game you're spectating in.
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