Tried it out. The improvement is simply amazing! I really like how the rifle is held with the drawn-weapon-idle animation.
One "problem"... I think the running with a rifle drawn seems a bit stiff. I don't think it's very comfortable to run if you hold the rifle the same way you hold it when standing still. I say push the tip of the weapon away from the hip a bit further when walking (not much, just a little bit) and push it even further when running.
The PA idles look nice although when your turn it uses the normal anims but it should be easy to fix.
The pistol anim is nice. Reminds me of the Warhammer 40k RTS games for some odd reason.
Another alternative would be holding the pistol the same way law enforcement hold it. Something like this but standing and with the gun pointing downwards at a 45-30 degree angle with the vertical:
http://www.olive-drab.com/images/id_pistol_m9_700_09.jpg
Then when firing it you simply raise the gun and shoot (like the default pistol aim animation).
I'm really looking forward to seeing more of your work, keep it up!
Note: aegnor81 makes some very good points. Running always looked so unnatural (that and the fact that diagonal strife uses the move forward animations which just looks like some kind of weird moonwalk).