(I use google translation)

when it comes to damage caused by zombies, I always study it with a new team. I want the Z to be a real danger at first, then a free carnage after! ^^
(I use the Attack Slots X5 mod, which changes the way of fighting a lot)
I noticed that the spam zones were too small, I will delete them in the next update, do not hesitate to tell me if other places are concerned
The AI ​​of Z is ready to attack everyone, so everyone attacks it.
I'm trying to solve this problem, but when a Z is too hurt and enemies are in the area, he looks dead and waits without doing anything ... it's a basic AI game and I do not find nothing to break. he. but I'm looking for! ^^
The Z Strikers are stronger than the others Z, but might not be enough ... I'm going to increase them a bit.

Thank you for these comments, it is precisely that I needed ;)

I agree with many of the points stated above, at least in my opinion i feel that the zombies are too slow and weak to pose as a real threat even in such large numbers.
A few ideas to improve your mod further at least in my opinion:

[1] Increase the health of all the zombies so that they are no longer such an easy enemy to defeat later on in the game
[2] Increase the speed of all zombies so they can move like living beings but increase the speed of the runner zombies so that they can actually keep up with/chase down slower characters
[3] Perhaps give some of the zombies weak weapons to add variety to the hoards of zombies, maybe even giving some of the zombies heavy weapons etc
[4] I am not sure if this is possible but mix the race and type of zombie up so that you cannot tell what they are until you are closer to them
[5] increase the health and stats of some of the "Heavy" zombie types so that they pose a threat perhaps 200 health and 50/60 in stats [Maybe have them as quite rare in hoards?]

These are just a few ideas i could think of and I may come back and add onto this comment should i have anymore feedback i could give you.
After playing your mod for a while i must admit the look and size of the hoards is great, I really like how the zombies look and at the start of a new save the hoards are a tough foe! [Though they are easy to kill in small numbers and you can run away from them with ease.] So far im really liking your mod and appreciate the hard work you have already put in, I hope my feedback and ideas are useful to you

All his ideas are really good, and I get a lot of message that asks me this type of mod.
It's not going at all with my vision of zombies so I will not incorporate them into this mod...
But I think to do another mod (not right now, I still have a lot to do! ^^) with infected, similar to zombies but much more fierce, with weapons and armor.
For the end of games! ^^

Suggest giving zombies their own territory that's not near the cannibals or fogmen.
(foggy location in ah spot away from overly populated areas like Obedience in ah corner away from the center or in between leviathan coast and cannibals plains)

like a ground zero, or source of the infected type of spot? sounds like a neat idea.