Those pics look great.
I notice from the upcoming Operation Hades expansion announcment www.fantasyflightgames.com/edge_news.asp?eidn=3412 that:
"The darkness of the underground grants a unit increasing levels of cover the farther it is from an attacking unit, and units cannot target foes with four or more spaces between them."
This rule could be easliy translated into use in a dense jungle follage enviroment (or indeed into a fog/mist based senario).
I also reckon that adding parachute units is possible using the same rules that the SSU Helicoptors have for dropping into a battle.
I really hope that the Japanese and Australasian armies will be developed.