I recently downloaded "beta" pack and started playing through ep2 again and
noticed that zombies have not gibs, phong, normals and just looks weird, cause
they rigged not perfect. So now you can see my revamps:

-New, better rig for fast zombie.
-Small changes in unwrap of classic zombie (just fixed gray triangle on leg) and big of fast - now he has only one nice texture.
-Good normal maps, neat, not "plastic" phong, rim (ep2 only).
-Gibs, also models for npc_classic_torso and npc_fast_torso.
-New animations from episodes, such as Alyx-fight and car-fight.
-New skin for charple human, blue variation of green uniform (like Zombies suit).
-Headcrabs, my version of black headcrab reskin.
-Zombine reskin.

Enjoi, people...