I did, and I'll say that I wasn't disappointed with what I saw. I actually liked the look of the Motobug.Besides, if I wanted to expect totally new badniks, I'd just go and start criticizing Sonic Advance. I already know this game isn't living up to its name, and I'd rather be optimistic than grow another headache stressing over what it should be, and will most likely never be.
(and I dunno about anyone else but the cartoony look reminds me of Shuffle)
Just because they're reusing stuff, to me, doesn't mean they'll make a bad game. Sonic Pocket Adventure reused stuff like crazy, and I love it.