I think it would be cool to be able to watch games back, especially games you weren't there for. It would be nice to be able to rewatch past matches like in the first-leg or something of a tournament in order to see worked and what didn't and be able to study the opponent's tactics one more time. I don't know if it would cost a lot of data to save those replays, but I only expect to save the replays throughout the season- no saving in an archive or anything and they all get reset when the new season does. Idk just think it would be nice