My little brother's finished up his edits to the Shotgun ZSec's head for the pain and death animations (looks really good, since we couldn't really use any other animation besides the Doomguy's), and I've started on the recolor. Should only take me a day or so, then I'll send it to PrznDoom to put the blood on.
As for the decorate, I've done a few small things for all three (complete) ZSec's. The pistol variant can fire continuously with a random delay in between shots, the shotgun variant fires immediately after it's pain state (since it always seems they do that anyway), and the machinegun variant doesn't loop it's attack, it just continuously fires for a little while (with a chance to put a small delay in the middle, so you think it's stopped).