The problem with this is that WiiU was a commercial failure, so all the best games got a chance to shine again on the Switch.
Not now - Switch is an unmitigated success, Nintendo is swimming in cash and has no excuse now.
I really cannot fathom a scenario where the next console will be anything else than Switch 2 - the market has proven that the concept of console + handheld works incredibly well.
Knowing Nintendo though they will get once gain stupid idea to go standalone + handheld in the thought they will capture the market from Sony and Microsoft.
WiiU likely would have had some potential had they un-Wii'd it. There was potential in some of the game but I'll share a secret with you. I was completely disconnected from Nintendo when they previewed and launched WiiU. When I first saw it, I thought it was an upgraded Wii. I really did not know this was a new console as I'd seen the Wii mini just a couple years prior. That bring back to understanding Nintendo's next move.
So, we know this about Nintendo in terms of new hardware:
1. Focus is always on first party games and they're never going to push a console to the levels we see with say, PS5 of X BOX X
2. They're happy with this and know it will still effectively sell as long as people like the hardware. Didn't say love it.
That said, I highly doubt we'll see a Switch 2 (meaning a beefed up 'pro' version of the exisiting Switch). However, not learning from mistakes this:
"Knowing Nintendo though they will get once gain stupid idea to go standalone + handheld in the thought they will capture the market from Sony and Microsoft."
They may try something like that. I keep picturing this Switch Dock-sized console where the games can be loaded into and having a slide out screen with wireless motion sensitive control. Unfortunately, they way the may end up going forward is backward.