Um, if by "innovative concept" you mean "almost exact ripoff of uservoice", then yes, I totally agree.

It is a little cleaner and much closer to the rest of dropbox's site than they could get uservoice. I'll be interested to see if they regret reinventing the wheel and thus having to spend time solving problems uservoice has already solved.

There are obviously some benefits (same login as the main site, they can implement any feature they want, looks more like the rest of dropbox)