Miis have been a part of Nintendo gaming for over a decade now, and the company will continue to support the digital avatar system on Switch - although it won't be compulsory for players to create one.
Speaking to Kotaku, Nintendo has confirmed that while Miiverse and StreetPass aren't part of its plans with Switch, the console will still have a Mii Maker application and users will be expected to share their Miis on "established" social networks:
While Miiverse will continue to be supported on the Wii U and Nintendo 3DS systems, our approach with the Nintendo Switch system is to make greater use of other established, broadly used social platforms. For example, captured gameplay screenshots can be shared on popular social networks, and social features such as voice chat are possible with smart devices through our app.
There is a Mii Maker on Nintendo Switch. The software to create Mii characters is now located in System Settings, and no longer resides on the HOME menu as a standalone application. You can also create a Mii character from the Profile screen. Making Mii characters is similar to the method used on past systems.
Mii characters can be used to represent a user profile, but are not required. Users also have the option to choose a profile picture from an included library of Nintendo character images. Mii characters can still be used in games if developers choose to include them.
You can send/receive Mii characters through local wireless communication between Nintendo Switch systems, or use an amiibo figure to transfer Mii Characters from Wii U and Nintendo 3DS systems.
Mii characters on the Nintendo Switch system are similar to past iterations, but they have some different options. More facial components and colors for hair and skin have been added, while the following attributes have been removed: creator's name, favorites, birthday, copying, and "public."
Do you see this as the beginning of the end for Miis? If they're not required, we imagine that many people will simply use another image for their avatar. What do you see yourself doing when you get your console on launch day? Will you stick with your existing Mii or do you fancy a fresh start?