I certainly hope that "Single Player Campaign" is on the mythical checklist.
I've played with the current AI bots, and... I am..
very, VERY good at being shot in the head.
And honestly, it sounds like the new AI scripting will make it possible to replicate the whole "Scientists Cower - then pull out a gun and shoot your face" behavior I loved so much...
Also, shooting a guy in the arse made him hop in pain... I loved doing that on the venerable N64.