Not in my opinion, we had been watching Nero swing his DB around for like 2 years in trailors and sample videos just to find out that there was nothing new to be revealed.
The story of DMC4 is just another average, someone is trying to take over the world story, while other DMCs had an impact on the actual story line. As I said it was fun, but it's very dissapointing to find out that everything you played for was for nothing. You see im motivated to play a game more when there's a good storyline going on and there's a prize of information given. Even in part 2, Matier is all like, "Go kick this guy's *** and i'll tell you a story bout Sparda." That's why I was so eager to beat part 4, because they would make it seem like they were about to tell you something, then you get there and there's nothing. ><
That's just my opinion anyways.