I must admit its been awhile since I revisited this one, so I was delighted to find a new, free offering for this game: The Channel Campaign. This is a good read and has lots of potential for Aeronef too of course. Find it here:
http://www.battlecorps.com/catalog/product_info.php?cPath=219&products_id=2594
You might also be interested in the latest interview with Catalyst Game Labs by Beasts of War, which they recorded at GenCon and discusses both Battletech and Leviathans.
