I like the idea of Primal Survival. But the trailer made me think that some of those details should already be in the game. Like the wolf den, argentavis nests, bears fishing for salmon, raptors should be coordinated similar to the dire wolves or terror birds. (Raptor's AI is stupid, every time I fight one its AI is to stupid to even hit me, they also don't coordinate in packs very well.
I do like the idea of the Primal survival. Just some things should already be in the vanilla game that I saw from the trailer.
Also in the Primal Survival they included the addition of mating as the Dino. I hope they keep it clean and don't make the Dinos hump.