I just had an idea that the deleted mission "Cobra Pilot" can be "reconstructed" to resemble our/your interpretation of what the level would have been! It seems really cool we could build it based on a Chopper Gunner? I don't know! The reason I cant pursue it myself is I lack the programs and more importantly the skill in building a map/level. Check out the Wikia page on it http://callofduty.wikia.com/wiki/Cobra_Pilot. Quite personally it would be an amazing level to reconstruct if possible.