I have faith in it. Shane Black has an excellent track record as a director and writer imo. I didn't love The Nice Guys as a whole but I liked the character development and interactions he specializes in, just as he did with Kiss Kiss Bang Bang, Lethal Weapon, etc.
Plus with him having spent so much time on the original Predator set with Jim & John Thomas, Joel Silver and John McTiernan, I can't think of a better person to take the reins.
It also bodes well that the original film's creative team thought so highly of him that they wanted him to do some rewrites.