Like Tinywolf said, Tarbosaurus is nearly identical to T. rex. Some scientists even classify it as Tyrannosaurus bataar instead of Tarbosaurus bataar so similar are they.Well mainly because tinywolf, Tarbosaurus got famous from the Korean movie Speckles the Tarbosaurus and I really love this creature, I think this game needs another tyrannosaur species since it appeared in Jurassic World Alive. But I would like to see five different species of tyrannosaurs in the game such as Gorgosaurus, Albertosaurus, Daspletosaurus, Tarbosaurus (like I mentioned before), and Tyrannosaurus Rex (which it's the only rex in the game).
Also, I agree with you on the Euoplocephalus in the game since it's from the novel.
The same kinda goes for Albertosaurus and Gorgosaurus. They are really similar and the same size and some scientists also classify Gorgosaurus as Albertosaurus. Either Albertosaurus or Gorgosaurus would be a good addition, but having both just doesn't really add anything.