Written Option 2:

I think a good system to bring over to the SHL would be some sort of rougelite elements similar to Vampire Survivors or Balatro. Something that makes every game different, other than the players and teams of course, could be items or talents that can turn the tides that the coaches can pull out during the game to accentuate their team's strengths or hide their team's weaknesses. One example could be that their team's goals could count as double in the third period. That could cause some tense situations! Another example could be that while their team is shorthanded on the ice, there can be no penalties called against their team! Which means they can check/trip/and bash their opponents in, giving them an even play state or even an advantage!

I think these rougelike elements would be super exciting for the casual player to watch, and make it even more exciting for coaches of these teams.