I never understood why people think that a portable will be as powerful as x system... it's just not going to happen.
As for the switch 2... I'd of course like a jump in power as well. But, I differ for the rest than everyone. I see the switch's screen as an excellent one. I'd be more than happy to keep the screen and have the extra power go into games in every other area ASIDE from resolution.
Then I'd love proper chat system, better layout for the eshop, folders on the home screen, and custom backgrounds too.
I would also love it if Nintendo themselves had more variety for joycons outside of simple colors. I have the hori split pad pro and I absolutely love it. I'd love to see Nintendo do this too. A gamecube split pad? Sign me up. Theres a huge market there, I think.