Just been put on to this by a gaming buddy (thanks Stuart!) - This is great stuff! I'm looking to do the same in 1/32nd (54mm) scale and your figures are very inspirational. Please keep posting as you progress.
I have yet to actually convert/paint my first figure but have lots of ideas for factions, characters etc.
The link to the Siberia Miniatures site is well worth looking at - some tremendous info there - highly recommended.
I like the sound of your game rules - sounds like it would simulate the tumult and confusion of the time rather well. I was looking at a rather more conventional 'narrative campaign' approach, with an over arching storyline and linked games using our own Tales of Derring-Do! (TODD) rules. I like your idea better!