If i will do anything like this i will add ALL important to SDK such as :
ammuntion management, damage, spread, altweapon, animation usage instead coded lenghts ( maybe that it is the thing that Shaffer was talking about )
allowing vertex animated first person models ( tags sucks for hands animation, you cant do moving fingers with that )
akimbo option, rate of fire ( including fast fire hack ), fire code ( choose between bullet weapon , grenade, missile, flamethrower, special* ), and maybe even more
the only question is if it’s needed …
*medicpacks, pliers, ammo…