There are things to fix with the Deinonychus and the Carcharodontosaurus. I would like to have the sails of the Deinonychus removed but I would accept
that outdated skull depiction iirc that Frontier used for the Deinonychus and the skin should tell people that the Deinonychus and the Velociraptor in game aren't the same.
The devs should remove some of the spikes in the Carcharodontosaurus especially the ones on it's side and the one on head. They should also change the skull that makes
the dinosaur look like something else than a Carcharodontosaurus.
As much as I would like the head fin on Deinonychus removed and some of the spikes removed from Carcharodontosaurus, it's not a necessity. It's not something that needs to be fixed. In fact, I would argue there is nothing to fix because their appearances are based on artistic decision on mutated dinosaur clones. Frontier's artists didn't mistakenly make them like this, they were chosen to look just like this, not unlike Dilophosaurus and Velociraptor who were changed. One might say JP Velociraptors are actually Deinonychus, but truthfully, they're not. They're based off of them, yes, but JP Velociraptors dwarf actual Deinonychus, and this was an artistic decision so that they are more threatening. The continued lack of feathers is also an artistic decision.
So in short, it's inaccurate, but it isn't something that needs to be fixed necessarily. It sucks, but it's how it is. It's creative liberty and artistic choice at work. There are things that DO need to be fixed about the game, but these aren't them.