This is some very exciting and promising news.
I see where everyone is coming from, the sequels all had that aura of cheapness to varying degrees compared to Predator. Even Predator 2, with the decent special effects had this emptiness, something about the suit looked obvious as a suit.
None of the Predators, not even the latest ones could reach the realness look of the first. Yes, you know it's a suit, but it's so real that you kind of forget that for a sec. Especially with his moist skin when he is staring Arnie down at the trap, it looks like a real believable organism there despite being a suit. Almost as if they filmed an actual Predator inspecting Arnie.
P2, as good as it was, you could honestly tell it was a suit. The Elder looked brilliant though, but Pussyface did look very suit-y. Same for the AvP films and Predators Not that it's bad, I loved all the films.
But this news of Fox wiling to invest more sounds promising that maybe this new film will come really close in portraying them as believable life forms once more. If they could do it in 1987, they sure as hell can do it in 2018.