I think that it depends. For guys like Todd Marshall, Luis V Rey, and even Kaijusamurai they have presented modern dinosaurs that have managed to reinvent themselves, but it is a balance. Imagination needs to be included for both sides: the retro and the modern/accurate. For example, you can make a superb Knight T-rex but run the rick of still ending up with a pokey thing that looks like it belongs in a B movie or, what every dinosaur fan laments hearing, a lizard. What was the difference? You still have to figure out the mechanics of what makes a retrosaur good, much like how the 2014 Godzilla did when they pretty much made the most convincing retrosaur that we've ever seen.
The same goes for modern ones where you can have Luis Rey make a perfect velociraptor, but you can also have the fool who just makes the thing look fluffy, the antithesis of the lizard and still just as discouraging. The trick is finding something that isn't a gecko, a tweety bird, a lobotomized clod, or a generically "accurate" specimen with no personality to it. Remember, Pokemon gave us a surprise with Tyrantrum: a T-rex that was feathered and yet wasn't fluffy, ornamented and not gaudy, ferocious, but ferocious like a lion.
- Take Care, Beannacht De Duit