I’m all in for an improved version. The Switch concept is great and needs no major overhauls to me. Just fix the joycon drift, improve the performance and continue releasing great games. No need to fix a winning formula.
I saw a post somewhere that said around PS4 power docked, which would be nice. I'd really hope they stay backwards compatible with the Switch, and do some major OS overhaul; namely the network stack and make the OS feel fun again like the Wii and 3DS