I think it's a much better system. The ratio will depend by country and by how militarized they are. For instance a resource rich country could trade resources for civilian factories and have mostly military factories. They could also heavily industrialize have a small army and ship lots of Lend Lease to their Allies. The overall system is much better because it creates some strategic decisions, better models reality of any given strategy, and encourages trade and supply lines that can be targeted by subs. The old system basically encouraged building factories early up to maximum resources without building any arms until getting ready for the war. This also meant that single player people played a totally different game than multi player. Decoupling supply capacity from ic is also a good result.
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