Great question - i think it will go back to the basics of G1.
The following is the list so far:
Optimus prime, Megatron, Thundercracker, Starscream,. Sunstreaker, Skywarp, Bumbleebee, Jetfire, Skywarp, Smokescreen, Jazz, Ratchet, Ironhide, Cliffjumper, Hound, Tracks, Jazz, Mirage, Sideswipe, Wheeljack, Rodimus, Rodimus Prime (i.e include FP work), Red Alert, Cyclonus, Scourge, Kup, Perceptor, Dirge, Thrust, Ramjet, Silverstreak, Blurr, Drift, Grapple, Wreck-Gar, Astrotrain, Inferno, Galvatron, Octane, Warpath, Thunderwing
and Ultra Magnus. (42 so far)
Probably include the FP insecticons as well.
I think once you see the design of the box you may like it.
Awesome suggestion with the box within a box. Lets see what they come up with. Ultimately I would prefer that the design is enough to warrant a HK release of the toy that can then be pushed to collectors worldwide.