Another Predator movie. Just make a cool story, make it entertaining. Make it a one off. My ideal Predator film would flop the protagonists, so it's more about the Predator than a human. Something different.
I love Prometheus and Covenant for a lot of reasons, but mostly is because it's just an interesting and unique direction for the series to go. It's not what the fans want. It's just Ridley's vision for it. And I love that. Even if someone comes in later down the road and does the "REAL ORIGIN" of the Alien where it's exactly as the fans always thought, then whatever. It's not going to ruin Covenant for me, as that film, and it's themes are super interesting.
Alien has always been about unique visions. Predator almost was there. I think Hawkens made a brilliant 90's comic book esq film with Predator 2, that really felt unique compared to the first. And while I love Predators, it does try to "take it back to it's roots" and that's the most disappointing thing about it.
The Predator at first seemed interesting as it dabbled with Predator v Predator wars, and a larger story to it's small town backdrop. But it being a confused mess killed it.
It makes people not want any more Predator movies, which I understand. But I can close my eyes and see so much potential for the franchise but I feel like the studio wouldn't want to try anything different. Honestly, I'd love it if you got a good filmmaker with a vision, gave them a small budget, and let them go wild with it. Do a Blumhouse basically. Have fun with the concept, and it'll be successful no matter what because the budget is small enough to turn a profit.