Since the debuts of Discovery, Picard and all the other series there has certainly been heightened interest in some "core" figures, like the various Picard figures from the early 1990s, as well as Locutus and Seven to name a couple. With four Trek series in production, which has never happened before, there is bound to be a resurgence in merchandise as people watch these series.
Since the debuts of Discovery and Picard, there's certainly been a doubling of interest in some figures, just looking at what gets bought and the bidding contests.
Once the 2022 figures hit the shelves I would expect for interest in these 1990s figures to resurface, b/c people who didn't even remember these new will be googling them and seeing that there is a whole universe of them from the 1990s. Which ones they'll want, of course, is a separate question, but it's telling that Pmates has shown prototypes of Picard, Riker and Data, which had been crowd-pleasers in the 1990s in their various versions.
Hopefully, once the new figures hit shelves, people will see that the vintage figures are still available in absurd numbers on eBay for very little money, and discover them anew, and seek out some rarities that exist.
Reposting a list I made in April 2020 of the Top 10 figures that were growing in buyer demand and price at the time. I'd say this list still holds at the moment. (No particular order).
1. Picard, all uniform types (but not as a Romulan, Galen or Generations, etc)
2. Locutus & Metallica Locutus
3. Borg, all varieties
4. Hugh, obviously
5. Rom and Nog (this is really weird, but they've been going for about 20 bucks)
6. Crusher from All Good Things
9. Dr. Zimmerman, MD (holographic)
To this list I would probably add Pike and various Kirk figures at this point, and a few others that have surged in a more subtle way in the past three years.
And also, Janeway has been seeing crazy demand for far longer, for about seven years now. Janeway has been going for $15 to $25 for a while, and of course there is a new animated series with her that's launched just now, so that demand is just not going away. Janeway figures were a little scarce from launch (along with Torres) and with so many people buying them now the supply just has trouble holding. Probably one of the top figures to watch this year tbh.
Rom & Nog recently sold for $30.93 + $5.85 shipping after 13 bids.
These have been selling for well over $20 for some time, so this result isn't extraordinary, with this figure seeing increased demand for a couple of years now.
The two variations have to do with Nog: he's either in front of the pog or behind him. The variant with Nog in front could be slightly rarer, but not in a major way, not enough to really swing the price. But it does look slightly cooler than if he's hidden.
Here's a relatively rare, for this release, error figure, and it's once again the wrong card. I've only seen a handful of swapped card errors in this release, and virtually no Skybox card goofs, like missing cards or wrong cards.
Something like a cardless Sarek error figure might actually look pretty cool.