Your suggestion reminds me of a game called "Risk 2210 AD". Wizards has a nice online [demonstration](http://www.wizards.com/avalonhill/flash/riskdemo_021210.html
) of it. Maybe you'd also be interested in the [Wikipedia article](http://en.wikipedia.org/wiki/Risk_2210_A.D
.) about the game.
Some of its concepts (such as sea colonies and extra territories on the Moon) could be readily copied to Warlight, especially if the one-way connections I saw suggested in another thread are implemented.
Some other concepts (rolling with a D8 under certain conditions, the entire concept of commanders) would probably require a significant rewrite to the code. Also, it makes the game more "messy", less predictable... I'm not sure whether most players would like that.
Of course, there's copyright law to consider; outright copying their Lunar map and adding their sea colonies is asking for trouble. But if someone happens to have the game and wouldn't mind reading through the stack of command cards and use the best / most appropriate ones as inspiration for suggesting new Warlight cards, I *guess* (I'm not a lawyer!) that would be okay?