You don't know anything about ZAPT, do you?
Not a whole ton but all the other stuff seems to be made for Gamemode_zombie. Iban did say he managed to convert Zombie Dogs in five minutes, so if I can find ways I may base it off both. I am going to research ZAPT a little more thoroughly tomorrow, including zombie types. Particularly the Boomer (which will be the final version L4D boomer, Rotondos version will be the prototype boomer that could only explode and had no bile attack) and the Smoker (playing as a smoker would be damn cool).
And I am looking into a zombie gamemode that ISNT a L4D ripoff, but it will likely take me a while. And along with the absorber i am considering another type of zombie someone mentioned in the unfinished ZAPT v3 topic: The Stripper, which knocks away your weapons. For people with bikini chest decals, I may have it replace that with a decal that has a CENSORED bar over it. This would be an option you could disable XD
I dont know if thats funny, stupid, or both so thats why you would be able to turn it off.
Then... hmm... For zombie mode that IS still a L4D ripoff, I noticed a few types missing. The Charger (Iban's Leaper may be a combo of this and the Hunter), the Spitter (idk if anyone ever made this), and two unused L4D/L4D2 Special Zombies (infected): The Screamer(which summons hordes and flees) and the Leaker (capable of self destructing in a big explosion).