@Tyranty I personally prefer to use population file I made but I do like the nav mesh scripts you did. SO here are two ideas I think would improve this mod. First of all, in c2m1_highway, you should replace defaulturban population with, lets say defaultrural. Reason for this is 1. I think it counts as rural area and I do believe defaultrural is normally unused anyway (feel free to correct me if Im wrong) So you should be able to change it without affecting other campaigns.
Second thing is, I use "Parish Bridge Unique Population" mod which also utilises defaulturban population, and problem with that is I have custom L4D2 style police officer infected in light blue uniform (doesnt replace default police model or L4D2 police model from Extended Common Infected mod, though I do have the latter one) and I dont want these New Orleans police infected to appear in other campaigns. Second change I would ask is changing population crossingswamp in c5m3_cemetery to something else, lets say add crossingswamp2 and make it use that. This again for the reason that I dont want to have New Orleans police appear in other campaigns. Other than those two I didnt find any fault with these scripts, so good job. Could you please change make these two changes?

I will consider. I do want to say that using DefaultUrban was more of an oversight than anything. Also it may be a bit before I add these changes as I am currently busy with other things but hopefully it will be finished soon.

Thank you for considering my suggestions. And obviously yes take all the time you need.

suggestions: mudmen in hard rain chapters 3,4,5 and in the sacrifice chapter 1 replace l4d1 ceda and road crew with l4d2 versions of ceda and road crew, and for the sacrifice chapter 2 use hard rains suger mill population, and for the sacrifice chapter 3 get rid of l4d1 commons and keep l4d2 defualt urban population, and bikers in the parish chapter 4 and overalls in chapter 3 of parish, and rural in hard rain chapters 1, 4, 5, and formals in the tunnel of love and rural population for chapter 1 and 4 of swamp fever and ad deep swamp popultation after swamp fevers ferry. this sounds dumb lol but hey here is some suggestions. also cant find bikers in chapter 4 dark carnival nor ceda at the ceda zone in the parish. you may not see this though.

would be really good if it worked with https://steamhost.cn/steamcommunity_com/sharedfiles/filedetails/?id=2291140471&searchtext=common+infected