This consists of three different addons that change the Common Infected population (Specials and Bosses still spawn normally).
(See them in action here) http://www.youtube.com/watch?v=6zBEroqg2b8
The Barratry one will make only zombified uniform-wearers appear, the Depopulation one was meant to smother the map with Fallen Survivors [for the lewt], but only one spawns at a time. This basically makes the map near-empty. The last one replaces all Common Infected with the Uncommon Infected, for the randomness. I considered making an extremely-hard one, only Riot Infected, but I put it off too much to make, so there's only these three. (If you're wondering why I didn't make a "Infected CEDA-only" mod for the easy Bile Bombs, it's because that many hazard suits wheezing at once got really obnoxious.