I think people grew to accept or even like the Trevorcard debacle, didn't they? I was more pissed off at "Commander Olrox" and "lituenant Brauner" god those irked my gears, why use them if there were going to be nothing like the original (Still I liked vincent Dorin, eh). The worst part about those two is that they were completely aristocratic vampires, turned into brutes.
I hope mercury doesn't pull of something like that again and if there are old characters they will at least resemble the intention of the originals. The medusa, for example, is a good one, they adapted the greek myth into the Castlevania lore and now wer're fighting medusa and the other 2 gorgons.