Hey, to each their own. While I personally don't care for the look but I'm sure there many just like yourself who find the new design to be fresh take on the game - I'll agree with you that DMC4 was in fact a little stale (*cough*Blame the love story*cough* - not to mention the game just was lacking something...), but hey, let's see where it goes from here I suppose.
Who knows, they may end up doing a re-revamp before the game is released. (remember how Dante looked in the REALLY early screenshots of DMC 4?)