Again, go ahead and mod UT3 for any or all of these variables and see if the "challenge" makes the game more entertaining or not
That does not make sense to me but maybe I missed something. I think you should go play Multiplayer against humans to see what good AI could add to single player and then compare it to playing bots. Then tell us which is more entertaining.
I mostly MP now cause humans are better than any AI thus making gameplay more varied and fun. AI is simply trying to get NPCs playin more humans that's it.