If HAsbro hired you to make vehicles for GI Joe, what would you build? 
I'd have to make the A.T.V. from Issues 6&7
 The L.C.T. from issue 1
 A  T-72 and a BM-21
 The Cargo (SkyCrane) Helicopter from Yearbook #2
 I think what the Joes need more than anything is a LCU (Landing Craft, Utility) 
http://en.wikipedia.org/wiki/Landing_Craft_Utility
"To Project Military Power from the Sea" 

 Something to run right along side the USS Flagg and dump troops and vehicles on Cobra from the beach!