Credits to @flint fog for the idea
It's kinda boring (and dumb) that the only Virus wastelanders can create is FF (and SV but nobody does that anymore)
I am suggesting to add the virus samples of CRO, and CZ somewhere in the map.
place The CRO sample somewhere in the volcano (pertaining to the fact CRO makes you burn alive)
place the CZ sample in the gamer bunker (pertaining to the fact it is a bioweapon)