That could be a great idea for a Category extension. Let the mods know and they can (possibly) add it to the leaderboards. A bit of a pointer, if it were to added, Golf: 4 players would have to be changed to golf: multiplayer.
you can't play 2 player baseball or boxing. but co-op tennis, golf, and bowling would be cool
You could technically do 2 player baseball and boxing, you would just have to have one of the players/remotes lose on purpose.
I say it’s fine the way it is. There is no need for a category like that and it is a little odd to me that it’s called co-op all sports when you only do 3 sports. Say it’s best to not add it.
We don't need all sports, tennis would be cool to play with two miis (something that is only available in OGWS and maybe WSC) and if golf gets added bowling should be added as well
What about something like an All Sports Any%? That could be a way to incorporate things such as 2P Tennis, Baseball and Boxing as mentioned since they are incredibly consistent, and I think it would be a lot more fun and good practice for the 1P Sports in a run setting when you don't have to rely on the RNG heavy minigames. As long as you finish each minigame anything is fair game. Always puzzled me why there was never a true Any% category.
After a discussion with the other mods, it was decided that 2 and 3 player golf will not be added, along with multiplayer tennis / bowling. The general consensus was that theres already enough CEs and 4 player golf is already very inactive.