Who wants their war effort bankrolled by the Commonwealth? The major banks arn't above giving loans to imperialist states, although they will expect payment. And those loan recovery assassins have had a lot of practice.

Serioulsy though, I'd like to position the Commonwealth as a neutral party to Imperialist countries that while being a bastion of hyper capitalism and liberal ideas, its also a major supplier of high-grade anthracite coal, oil, steel, and war material for any nation willing to buy. Any takers on being major trade partners?