I think Capcom is taking a gamble, but there's some undeniable facts here. Firstly, I am a fan who does not like the idea of this reboot but as I read more new information, I'm beginning to understand a little, maybe lol.
So basically, though we are all mostly angry with Dante's appearance, I think the game itself will still be good. Ninja Theory's graphics are pretty...you can't even tell me otherwise. Heavenly Sword's graphics were visually stunning and it looks like they might be able to use Capcom's engine in this game which will make them even better. Secondly, Ninja Theory is damn good at character development. I was actually a fan of Heavenly Sword, and it seems like they made each character important in their own way. Character development would be GREAT for a DMC game.
Thirdly, the gameplay. Of course we haven't seen any but let's take what we have seen and break it down. Heavenly Sword's gameplay is debateable. Some people liked it, and some didn't. Let's look at the DmC trailer though. Even though Ninja Theory stated they want a more realistic, dark, and brutal feel to the gameplay, in the trailer Dante still fights with his sort of unrealistic, stylish flair i.e., staying in the air long enough to perform a full combo on an enemy and then stab him to the ground. We've seen it before, but that could possibly gameplay hasn't shifted too much. Dark and brutal most likely means, what people don't want to hear lol, QUICKTIME EVENTS lmao. We'll most likely be going GoW(God of War) on bosses and maybe even certain enemies.
Finally, we have story/voice-acting. Heavenly Sword's story may not be so original, but you can't tell me it wasn't told in a fluid, entertaing way which was made even more so by great voice-acting. Though Dante and other characters might have new voice-actors, Ninja Theory has proven to be adept at finding voices that fit their characters. They are also capable of taking a cliche' storyline and telling it in a such a way that it keeps you enthralled for some time.
So, in summary, the story should be good, the voice-acting should be tolerable, the gameplay should be largely unshifted(unless you hate quicktime events lol) save for a new realistic feel, and the graphics should be top notch. All we left is character appearance which IS a big deal in DMC's case, but this game and the developers have hinting SO hard that Dante will change and have completely white hair and maybe even look a little different towards the end of the game.