Hot take: Miitopia was better on the 3DS. Sure, it doesn't have that makeup feature for Miis, or a horse companion, but I (personally) believe the game has more of a challenge without a horse by your side.
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for real, plus the dual screen is more convenient
Completed the switch version recently, kinda regret not playing the 3DS version instead... besides I never even used the horse on my playthough lol