>>719204869
The problem with the Mii system is that rather than being a universal avatar system that gets its data pulled on the fly, each game that uses Miis has to have all of the Mii data built into it for some reason, so updating the editor means it'd be incompatible with games made before unless Nintendo and any third party devs that were given the OK to use Miis updated every single game that used Miis. This is why the first Mii maker update didn't happen until the 3DS came out, why hair dye (Tomodachi Life) and eye/brow/glasses colors (Miitopia 3DS) were seclueded to those specific games. It's also kind of funny to look back on, how features like the favorite color beanie and baseball cap were customization options in the Wii era back when hats were not an option, but became dated fast once the 3DS allowed all hairstyles to wear hats.
That said, they had the perfect solution right in front of them with the Switch 2, yet decided not to update the Mii Maker there.