You do make a valid point that the next version will have to up the ante and try and keep ahead of the robust and diligent debunking we see here and the tools that are being developed. Whilst I do think most members of UFO industrial complex (UIC) are at least shameless publicity egotists or at most deeply delusional, I'd like to think they have some sensitivity to public opinion and marketing feedback. Or perhaps I'm just naive.
Upping the ante will be tricky. Previously (historically) they've gone from seeing disks in the sky but shunning landing and occupant cases to accepting occupant claims but shunning abductions, to embracing abductions but drawing the line at contactees with their repeated journeys with and messages from our UFO brothers.
UFOlogy has now split a bit between the scifi and fantasy wings, if I may call them that, the folks who tell stories of "nuts and bolts" spacecraft and their real biologically derived aliens from other planets, and those who prefer mystic beings from another dimension who aren't really of this Universe and may bot even be material. There is some overlap, and at the moment the current wave of Big UFO promoters seem to have shifted the ground back towards the scifi camp,while the fantasy folks are sidelined a bit,making YouTube videos of themselves "channeling" UFO beings and demonstrating their mastery of "light speech" glossolalia.
Source: https://youtu.be/WZzUvd3IArA
Nobody wants to sit through all of this, and much of it is filler, but note:
The first 19 seconds which pretty well sums up the whole thing
11:59 where she ties the whole "speaking to aliens" thing very strongly to other New Age woo (but she does have a nice cat, so give her points for that...)
15:30 Where her friends is "activated" and also learns to speak gibberish
(It looks like the scifi UFO crowd has largely ceded the Contactee Space to the fantasy folks, maybe they'll try to get it back? From politeness, I will not name names but there are a few of them that I could see trying to go down that path.)
So I am not sure if there is much ante left to be upped. Assuming that the clear videos of a space UFO flying right beside a military jet that they have talked about do not exist (I think this is a safe assumption, but am open to being proven wrong) they have taken the "leaked video" thing as far as it can go -- all UFOs will be in the LIZ, and we've seen that and it is an old trick now. Unless they want to try to fool us (or are themselves fooled by) increasingly sophisticated AI fakery, I am not sure where the current round of promoters on the scifi side have left to go.
So I'll offer a counter prediction. We've seen interest in the topic wax and wane over the years -- has it now waxed about as far as it can, and will it now unavoidably wane as the act gets stale and no proof of anything can be provided, to go back to lurking in the collective backwaters of culture until this is all somewhat forgotten by most folks and a new surge of interest can be created? UFOlogy is all sizzle, and never any steak, and you can only sell sizzle for so long...
Side thought: The existence of the Skinwalker Ranch mindset at least gives the proponents a new memeplex they can move into, as they can roll over into dinobeavers, skinwalkers and cryptozoology to keep the ad revenue and speakers fees coming. So perhaps the "next big thing" isn't all that big, it's just a quiet movinng-on from UFOs to another adjacent flavor of woo where (they would hope) Mick West and his jolly band of debunkers will have a harder time determinning and exposing what is the ground truth behind the claims of nonsense. How can Sitrec cope with a dinobeaver sighting?