I downloaded PFM just now so i shall have a play with it then report back what i can possibly come up with. I like the idea that alot of the actuall WW1 units are not too far evolved from what we have now. For sharpshooters a simple idea would be to maybe increase the range to 200 jump the accuracy a bit and drop unit size and hey presto you have snipers. I also really like the idea of shock troops for scaling castle walls, so in Kachi armour but with imperial look uniforms underneath with katanas and dual revolvers. The stormtroopers.
Anyway im gona have a play around and see what i can do.