As some of you may know (or not, because the thread was closed), a bunch of dev documents related to Nintendo Switch were leaked, including the full SDK.
While browsing through the leak, I found some interesting details about some future features that are planned to come to the Switch. You can find them for yourself on the 'NX Account Guide'.
The first one, which is more boring, is that save data transfers are indeed coming:
In the future, we plan to provide a feature to transfer account save data among multiple consoles. As a result, there is the possibility that user accounts with uninitialized account save data will be added. Note that your design must work without issue, even in this case.
The second one is about a feature called Guest Login:
We are considering a feature in the future (tentative name: Guest Login) to access existing network service account information without linking to a user account. This feature would allow temporary access to the network service account linked to the Nintendo Account by logging in to the Nintendo Account within the application. This feature would, for example, make it possible to upload a character you have raised as online data and then use that data on a friend's NX (without creating a user account).
We do not plan to provide this feature for the NX launch.
The docs also talk about other features that were recently announced and introduced to Switch like the News Channels.
There's definitely nothing groundbreaking here, but at least we know that Nintendo will actually work to improve the OS and usability.
P.S.: The image also comes from the leaked docs, and you can find the whole set of cute illustrations here: https://imgur.com/a/Cq0Gv