I mean obviously. Mario & Luigi: Paper Jam did that, and so did the Mario & Luigi remakes. I'm just saying, having some but not all is a huge pet peeve of mine with a few certain games (lookin at you Mario & Sonic)
It was honestly a brilliantly insidious marketing campaing. They obviously wanted ARMS to take off as their next big-name franchise like Splatoon before it, but it just fizzled out before it could make it big (be it due to lack of interest, cutting support early on Nintendo's part, or both)...
Of the top of my mind, in no particular order I like:
DK Mountain / Dino Dino Jungle
Mushroom Bridge / Mushroom City
Toad's Factory
Rainbow Road in Mario Kart: Double Dash!!
Rainbow Road in Mario Kart Wii
Rainbow Road in Super Mario Kart
Choco Mountain
Mount Wario
Thwomp Ruins
Mario Circuit /...
I mean obviously. Gacha models only actually work when fanservice is involved.
Notice how the best alts so far have been the females. Rosalina in her Halloween costume, Daisy in her Fairy costume, etc.
On the opposite side of the spectrum, Bowser has yet to get a single variant... and yet Dry...
Probably because it'd be more expensive to fit him with all the neat lights n shit the Mario figure has.
Think Luigi will be like, the start of wave 2 or something