I've come up with a really fun mode for Smash Remix: Jiggly Smashketball
Unfortunately you can't use the Smashketball stage for it (at least not as intended), but still.
- Set stock to 3
- Turn off the Super Star item (and any other items you may want to turn off)
- Put both players on a team together with team attack off
- Set red team to either Polygon Jigglypuff or skeletal Kirby at level 1 (or an indle controller)
- Turn off hazards for stages (movement can stay on)
- See who gets the most KO points at the end of the match on the stats screen
Unfortunately you can't use the Smashketball stage for it (at least not as intended), but still.