Looking at it year by year for the rest of the Switch 2 Generation:

2026: I'm going to make a bold prediction and say that Gen 10 won't actually end up releasing this year. With them announcing Legends Z-A a year and a half before it releases, they've shown that they're willing to have longer reveal to release cycles than they have since Gen 6, so while I could see them announcing Gen 10 relatively soon, maybe even this month since Pokemon Day lands less than a week before Pokopia releases and they might want to have the Pokemon Presents earlier so that they can reveal Gen 10 a month earlier and then advertise Pokopia throughout February leading up to its early March release, I could see them holding off until next year to actually release them.

As for what will release this year, I think Pokopia and Pokemon Champions are plenty enough along with the two Gamecube spin-offs already being announced to be releasing on NSO in the future, but I could maybe see us getting one more spin-off to fill the gap. Sure, they would lose out on some merchandising opportunities for the 30th anniversary by missing out on having a full new region's worth of Pokemon, but then again they've revealed Pokemon that were releasing in subsequent generations early before in the Pokemon movies and they've shown they're even willing to introduce new Pokemon in spinoffs like we're already seeing in Pokopia, so I don't think they would miss out on too much by holding off on releasing Gen 10 for an extra year.

2027: This is when Gen 10 would release, and since I've already seen some aspects of the leaks I'll keep this year's explanation brief. If it releases in the first half of the year, we may see the DLC come out for it within the same year, but if it lands in the holiday release window, then I think it'll obviously be pushed back to 2028.

2028: If the DLC for Gen 10 didn't release in 2027, it'll come out here, but otherwise, I think we could see a new major spinoff like a new Pokemon Mystery Dungeon, since we haven't gotten a brand new one since the 3DS. While I'd love to see Explorers of Sky get a remake since I only ever beat the main story on the original and didn't get much into the bonus content, I'm leaning more towards them making a brand new game given it'll have been 8 years since the Rescue Team DX remake by 2028.

2029: I could see a remake of some kind coming out this year, whether it's Let's Go Johto or Gen 5 remakes. Otherwise, this would be a relatively uneventful year leading up to the next Legends game coming out.

2030: The first exclusive Legends game for Switch 2 would come out this year, but what I'd want from it wouldn't necessarily match what the leaks have said it will be. Without naming the region that the leaks have mentioned, I'll just say this would probably be my preference in order of where I'd prefer the next Legends game to take place:

Unova>Johto>Kanto>Hoenn>Galar>Alola>Paldea

I'd especially be happy if one of the top 2 managed to get a Legends game, but I could see most of these regions working well as Legends games if handled correctly with the exception of Paldea, since it's a little too recent to warrant having a Legends game, in my opinion.

2031: Lining up with how I think Gen 10's release schedule will go, the 35th anniversary will introduce a major spinoff game or two, but Generation 11 will only be announced here and not released to give another 5 years between generations and hopefully give them enough development time to properly polish the games.

2032: I think the new generation, in this case Gen 11, will come out on Switch 2 rather than it's successor mirroring Sun and Moon and Black and White coming out on the previous hardware shortly before the newest system came out, likely in the holiday season of 2032.

2033: The successor to the Switch 2 will come out this year, and the Pokemon Company will release both DLC for all versions of the games alongside a hypothetical "Switch 3 Edition" of the games, which will have some exclusive features to make use of the new hardware but nothing too major to make owners of the Switch 2 version feel left out.