fair enough! I'm a bit nervous re: prime 4 and will be waiting for reviews before i pick it up, especially as I'd be stuck on switch one and am worried about how well it will run on the older hardware / without Switch 2's mouse controls. But the prime 1 remaster was really good and is definitely worth playing if you feel nostalgic for the original gamecube release. Sadly it seems like we're not getting new ports of 2 & 3. If you have a pc that can handle wii emulation (I'm guessing you do if you're playing E33?), then you should look into 'primehack', a fork of the Dolphin wii emulator dedicated to playing just Metroid Prime Trilogy, including re-adapting the control scheme. It's really well done, and will probably remain the best way to replay Prime 2 and 3 unless and until Nintendo change their minds about remaking those games for Switch/Switch 2.
If you're new to Switch and enjoy classic 2d metroid as well, I highly recommend Metroid Dread. The atmosphere isn't quite on par with the best in the franchise due to the weaker score, somewhat generic area concepts, and some slightly repetitive chase sequences, but the controls are faster and more fluid than Metroid has ever been, the game allows for some compelling sequence breaks, and the boss fights are fantastic, including a few quick kills that feel amazing to pull off. It's not quite as strong overall as ye olde Super Metroid imo, but its still a great game that stands out even in a modern metroidvania landscape that's absolutely spoiled for great games to play.
Dread is definitely on what I'd consider to be the 'must have' list of exclusive first party games for Switch, alongside Mario Odyssey, Mario Wonder, Breath of the Wild, Smash Bros Ultimate, Mario Kart 8 Deluxe, Animal Crossing New Horizons, and maybe Fire Emblem: Three Houses (I go back and forth on that one - it's very good, but maybe not quite as good as the rest of the list relative to other game in its franchise). There's also several 3rd party multiplatform games that are great on Switch if you haven't already played them elsewhere, with a few stand outs off the top of my head including Monster Hunter Rise/Sunbreak, Dark Souls, Persona 5 Royal, and Alien Isolation. I'm sure there are more, but the Switch was mostly a first party & indie machine for me, so I didn't play as many 3rd party, non-indie games on it to vouch for them. Speaking of indies, the Switch saw so many excellent ports of fantastic indie gems, including Celeste, Belatro, Stardew Valley, Slay the Spire, Night in the Woods, Baba Is You, Animal Well, Hyperlight Drifer, TMNT: Shredder's Revenge, Outer Wilds, Shovel Knight, Cuphead, Nine Sols, Dead Cells, Cult of the Lamb, Ori 1 & 2, Hades, Spirit Farer, Undertale/Deltarune, and of course Hollow Knight and now Silksong, among many, many others. All stuff you've probably heard of and already have on other platforms if you really wanted them, but picking up a new Switch is a good excuse to give some of those a try if you haven't yet gotten around to them. They're certainly easier on the wallet than the first party stuff.
Celeste in particular deserves to be called out as a fantastic game that for many players was practically synonymous with the Switch despite being available on almost everything, and if you have any interest in 2d platformers at all and don't already have it on something else then I'd definitely consider it a absolute must-have.
As for Switch 2 specific games? I mean, I don't have one so can't speak from experience, but I have been following it pretty closely. The launch has been a bit rocky, clouded by recent controversial actions by Nintendo. Focusing just on the games, there's not that many stand out launch titles, and a surprisingly open debate on whether Mario Kart World, the biggest Switch 2 launch game, is even as good as its switch 1 predecessor in 8 Deluxe. Frankly it seems like a mistake to me that they didn't wait until they had a new first party 3d Mario or Zelda game ready to release for it, and I hear 3rd party games sales have been struggling, probably because they're mostly just ports of older titles that couldn't run on Switch 1, so while they might be solid ports of great games they're still kind of old news. Of those in particular, I hear the Switch 2 port of Cyberpunk 2077 is good. Despite Cyberpunks legendarily rocky initial release, in the time since it's become a great game well worth the experience if you haven't had the chance yet. Along the same lines, I'm hopeful that the Switch 2 port of Elden Ring will be good, mostly because I really loved that game and would be hype for more people to experience it, but it's not out yet so too soon to say.
Again, though, it's pretty much fully backwards compatible with Switch 1, which has an impressive library of great games to tide you over until Nintendo gets their act together. Especially the Indies.
In terms of online multiplayer, Smash Ultimate suffers from iffy service (though it's still a must have for the couch co-op experience imo). Mario Kart 8 runs well online, but I kind of burned myself out on the game years ago, so while I definitely recommend it I'm not personally inclined to play it. I've heard good things about Splatoon as a franchise, but never got into them myself so can't say if the Switch game is good or not. However, If you ever end up getting the switch ports of Monster Hunter Rise or Dark Souls, I could absolutely be talked into some co-op. I played the heck out of both on switch with one of my brothers & had a great time with them.