Really? I'd hate to see you read the book. This trailer looks rediculously optomistic and adventurous happy in comparison.
Speaking of the book, I gather from the vibes the trailer gives off, it's going to be quite a contrast just looking at how gutsy Desperaux is. He is brave in comparison to the other mice, but he's a lover, not a fighter. That and the gerneral tone goinhg from action/comedy/romance as opposed to the mildly dark/romantic (in the old sense of the word) tone.
Of course, I know a movie can't always be judged by the book it's based on. After all, Hunckback was wonderful and had next to nothing in common with it's original source. Likewise, you can't fully judge a film by the trailer, either.
I'll just have to wait and see.
Oh. Also, as for the designs, they threw me off at first, but looking at the trailer again, I'm starting to like it. It does greatly remind me of the book illustrations (especially the rat, Roscuro and all the humans look spot on). I love that shot into Desperaux's eyes early in the trailer, it's very nice.