For me, in the last year or two of the Switches life, I'd found the performance rather grating even though I loved the machine and the concept.
The Switch 2, even for games that haven't got a dedicated patch, has been somewhat transformative, with most games now running stably at the OG framerate cap. That has been priceless for me, even if I play docked most of the time; and the games that happen to have got a patch have been even better.
I also found Pokemon Z-A, a MASSIVE step up in performance from my (fairly recent) memories of Switch 1 Pokemon, so the Switch 2 was transformative there too. I am in that somewhat niche space though of someone who has a pretty huge Switch library (as both me and the wife play) but I haven't actually played a load of my games, so its giving me a chance to revisit basically all of them except the few titles I 100% completed; this being said, I can't help but think the Switch 1 sold so well, Nintendo looked at the stats and figured there are probably quite a lot of players like me, more than there usually would be; so between 3rd party upgrades, some releases this year, and some Switch 1 game upgrades free/paid, they could weather the initial wind up period.
I was going to play through my Switch library somewhat alphabetically, but MP4's release has surged MP1 Remastered and MP4 to the front of the queue after Astral Chain. I think I'll save Metroid Dread for later just to spread the goodness, as knowing Nintendo I might be waiting a good 5-10 years for another Metroid lol
I kinda hope they'll let Retro make MP5, as given they've updated thier engine and got a team back together, it'd be a shame not to let them cook without the baggage of a game that changed development teams and had to reboot mid cycle; the reviews tell me they've still got some crazy chops, and I'm sure they'll learn from MP4, and also be able to target Switch 2 hardware only at this point; giving them more freedom (hardware allowing).
I can't help but think having to make the game work on Switch 1, with much more limited CPU and GPU potential, will have limited what they did in MP4; just to get it all running well. The fact MP4 isn't just running 1080p60, its running 1080p120, almost flawlessly, highlights the CPU is ALSO being relatively under tasked in MP4, a Switch 2 only MP5 could push more detail, AI complication, more numerous AI entities, and other more complex situations. (as for anyone not aware, increasing refresh rate doesn't just increase load on the GPU, you also need the CPU to be capable of feeding it).
Edit: I'm also in the somewhat awkward position where upgrading to Switch 2 editions of physical games might actually make decent sense in some cases, if I can get good trade in value, or for games with the paid content packs like Kirby or Mario Party, I'd be buying the upgrades twice, which for Kirby for example would be about 30 quid for both me and the wife on our respective account/switches; whereas the cartridge comes with that license, so we just need to use the right cartridge. For resale value alone, if the trade in value+upgrade cost is about the same as swapping over to a Switch 2 copy, it just makes more sense.
For people only using one machine, the DLC upgrade packs make sense, but for anyone running 2 or more switches, it starts to get a lot murkier.