Above all concerns about the recent Predators (AVP and AVPR) we saw, stands one major concern:
THERE IS NO KEVIN PETER HALL INSIDE!!
Whatever suit, costume or rubber, latex, silicone ADI, Legacy Studio or KNB can use, and all their professional knowledge, which I never would doubt, it is still the acting, that makes the Predator to the creature we love that much.
I don't wanna blame now Ian Whyte for his acting inside the suits in the last 2 movies, cause I know how freaking hard it is to find a approx 7 feet high athletic and sporty guy, which should have decent acting skills at the same time. No question!
So towards the main question, I would say that ADI could make a good Predator design and good looking, believable suits, if FOX gives them the needed resources. And that is money and time.