To quote myself on a recent and fairly similar post:
In short, zombies should have at least somewhat obvious visual indicators that they are different.
This system, in general, feels extremely off.
Extremely random differences between the same type of enemy means you can never really adapt to any type since there is such a vast degree of randomness that every single enemy is unique. And I would argue that that has no place in a zombie survival game.
Learning how to counter, or if nothing else, at least play around enemy types is an important skill to learn in games like this and one I have no issue with existing - especially if II sees the existence of much more difficult and diverse Turned enemies. Considering bandit AI is extremely likely to exist, bandits are another enemy to consider for PVE purposes. So while I agree that Turned should always keep you on your toes, there should always be a level of proper logic with the Turned, so that gameplay never feels unfair. And for that matter, I hope to never see the Burner zombie again, as it is an example of bad game design. If you don’t have a firearm, consider an area of town completely locked to you until you have something to deal with the burner.
I would be ok with a limited system of “adaptation” where depending on a combination of what Turned types you have been killing frequently, weapon types used to kill said Turned, the number of players in the area, and likely several other factors, the subsequent Turned spawns would change to provide a better challenge. This is the extent of what I would accept.