Dynamic Difficulty

The ideal would be the introduction of tougher enemies at certain stages. Nobody wants the basic zombies to level up along with us and negate our progression but I think most people would be for new classes of enemies that make an appearance and challenge us.

This actually is already implemented with the feral zombies and radiated zombies making their first appearances at certain gamestages. The problem is that most players play the game efficiently enough to be well ahead of the difficulty curve so that by time ferals start showing up and then radiated they are still not much of a threat.

Maybe they should significantly increase the threat levels of ferals and radiated zombies so that even the most efficient min/maxers feel some fear when those enemies make their appearance.

Then we can hope that bandits will represent a new higher tier of danger that will challenge even fully progressed players.