Nah, just make it a prequel centered around Vergil's rise to being what he was in DMC3 and his subsequent downfall into Nelo Angelo and Capcom pretty much have a pure fanservice game that prints money.
If they made the combat good again, I would not mind the eye candy. If they did it as yet another shameless excuse to half ass a game and try to wring sales out of a nearly dead franchise, I would be royally pissed.
If you can see me smiling, you've already died. If I'm laughing, you might have a chance. If I'm quiet, I'm planning on how to get back to smiling.