I'm sure there'll be plenty of those simple platform stages like Battlefield or Final Destination, in fact we have a few already... I don't see what there is to complain about. The stage designs actually see to much like that IMO. Aside from that DK stage, of which I don't like that anyways. The WarioWare stage, I don't know about it yet. It might be fun.
Personally I'd like to see more stages like Onett or Hyrule Temple. Yeah, I know, those stages aren't the Melee favorites, but I like how their "different", and I'd like to see more diverse stages like that in Brawl.