Yes! Please increase the player count.
Clones!
Palette Swapped colors for the characters outfits like 8bit and 16bit games did when you picked the same character! Or an expanded roster of characters. Or give us outfit options. Whatever it takes to expand the player count.
This would also allow for some fun PVP. If you bring back the game editor, I'd love to make some PVP Capture the Flag, Freeze Tag, and Hide and Go Seek maps, if it's not something the devs want to tackle. I'm sure it's a community of creators who would love to have more rules in the content creator. If there is an animation I could add, it would be a catch animation! Let me throw my buddy a Granola Bar, Smoothie, Weapon, etc.