*3d shooter party pooper alert*
Put all the great physics you want in there, if you don't react substantially when you take a bullet, the physics aren't THAT good
It's probably fun though. I generally only play tactical shooters like the Rainbow 6 series. Raven Shield benefitted by using the Unreal 2003 engine (I think), so I can't wait to see the non-half-life games that come out of the engine.