+1I suspect the problem is that in order to have game challenge, you either need to have "smarter" zombies, tougher zombies (we don't seem to want bullet-sponges...or at least not many of them), or more zombies. I think most of us want that last option....but I'm guessing it's in the realm of "not possible" due to the game's limitations.
I completely agree that smart zombies are meh. I'd love to take refuge up on a roof, and see their masses just keep building below. Sure, they're a turkey-shoot, but how much ammo do I have? The sound of my gunshots bringing still more. They're not smart enough to work together to break down the doors I boarded up, but now and then one of them will crash against the door, making me wonder how long they will hold.
I think our game lacks the "ZPUs" to give us the option we really want.
-Morloc
Also...to make lemonade out of lemons, this new AI seems to hold the groundwork for those mythical NPC bandits.