Not every band game needs MET-level toys to be great. The big Led Zep complaint is there's really nothing in the game that screams Zeppelin. The matchbox blimp? Not the spinner. Not the callouts. Zep could be reskinned easily into anything else.
Aerosmith - Toy Box / Kiss - Demon Head / AC/DC - Bell, Train, Canon / MET - Sparky, Hammer, Gravemarker, Snake
Oddly enough Maiden still screams Maiden even though it doesn't have a big band theme feature like the above, but it's the best band pin. Oh well, there goes my argument.
I still with LZ had more "Zeppelin" in it. Look back at the "Zeppelin is coming" thread. There's a lot of cool ideas.