I would be happy with being able to record more than just 30 seconds of gameplay. That's just ridiculous. If it was at least 5 minutes it would be MUCH better. Also, Youtube upload support. Just Twitter and Facebook is lame.
A better activity log like the ones on 3DS and Wii U would be great too. It provides valuable information about my gaming habits.
Anything else... I don't care. Trophies are plain stupid, I have Netflix on both my smart TV and my PS4, I don't use voice chat, I have a crap ton of other better options for text messages on my phone, folders are redundant with how well organized and easy to access Switch games are...