What make you say that? Wouldn't a more traditional dark ride have a similar looking track?
Don't get me wrong, I think it'd be very interesting to see an omnimover at Universal. Unless one counts FJ, I'm not aware of Universal ever doing a "traditional" omnimover (such as Disney's HM, Mermaid, Buzz, etc.). It'd be kinda cool to see their take on it.
On the other hand, an ever more traditional dark ride (such as Snow White, Pinocchio, Toad, or even joined train like Journey Into Imagination or Cat in the Hat) would be great as well. Not too picky here... although I'd hope an omnimover would have greater capacity.