No please, nag on! I really appreciate your crits. The things I agree with, I'm more than willing to improve. In this case the lighting e.g. needs to be like this, as this will be comped in with a frame of Roman pillars in the same light. I'd prefer backlighting and people further away. I agree with the 'flatness' of these guys, but hey, I just got into modeling, and am quite happy already with the fact that I can now quite easily pose some people. With extra effort their skins and suits might be made better (I could load them in Mudbox and wrinkle their skins a little), but there's a limit on the time I can spend also.
I might do this for myself with different lighting though.
For the helmets I used an additional (after the texture file) RT reflective shader, refraction @3 or 4, followed by a merge shader, multiplying the then turned stainless steel color by a redbrown and orangy PF to make it bronze again. But that last bit wasn't yet on this helmet. Any ideas how to improve more?