
To be honest, I think there is a chance to see Metriacanthosaurus/Yangchuanosaurus in JW. And a very high one for me. In fact, I consider it being the second most likely possibility for the new scary dino, preceded by Troodon, and followed by Carnotaurus.
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Well, this has been discussed before, but its' so hard to say. It'd make a good secondary predator. Not big enough to interfere with Rex as the apex predator and not small enough to interfere with Velociraptor as the smart and small predator. The one thing that does go against Metriacanthosaurus is it's name. It's not catchy at all. That doesn't really matter to me, but it would to the general public. Who knows.

This has been done before (by tours truly), and I would like to see Metri in the movie. It does sound pretty cool, maybe not catchy, but sounds cool ( to me at least).
Jack of all trades. Master of none

I hope that there will be Metriacanthosaurus! It's one of my favourite dinosaur overall. It's pretty cool. Yes, it wasn't really huge as T.rex or Spinosaurus, the bad guys of the prequels, but it was enough big - being a 1-tonne Theropod - to be a problem for the characters in that film.

Yeah. In my opinion, there should be 3 sizes of predators used. Small(Velociraptors), medium(Metri), and large(Rex)

I would notm mid Troodon and Ceratosaurus as well. ;)
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Same here.

Oops, I mean "I would not mind". Well, I think I made my point clear. ;)
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although metri would be really awesome to see, i think it will be a t-rex, some raptors, an defenitely troodon, because one of the makers said you'd wanna keep the lights on after seeing this video. this to me suggests it's a smaller dinosaur. however, i've heared many rumours about aquatic dinosaurs, which would be really cool too. i do really hope to see some new giant predator, maybe metriacanthosaurus, maybe allosaurus, maybe giganotosaurus, hell i wouldn't mind seeing the spinosaurus too. i do however would really like to see t-rex remain the king of the island, maybe it kills the other giant predator, idk, but t)rex deserves to be the ultimate predator