As it stands at the moment, the game is sufficiently frustrating that I'll never actually get to the point where having this smarter AI would be a benefit rather than a flaw.
Yes. This is called better AI. Old AI did suicide attacks. You simply must find ways to attack them, and you absolutely must kill the first lizardman! You have to be patient, and wait for them to step on plains, grassland, or desert, or if possible find areas to block them out.
Drop the portculis! Push the man into the path of the werewolf! Sacrifice a unit on a good defensive tile. Bait. A lizardman will usually take 55% odds. So a warrior on a hill is good bait. If warrior wins you get experience bonus, if he loses, you have your other warrior do cleanup. After 3 lizardmen, you should have 2 dead warriors, one live one with good experience, and one warrior that has killed 2 lizardmen offensively. Two, 2 star warriors and you are good. Better, give one the shock promotion instead, and have him hunt skeletons.
And Barbs can be deadly now. They will keep wandering until they get a stack, or they keep testing chokepoints, swinging their army back and forth between chokepoints until they become a huge stack.
Seriously, this new AI is great. I can't believe how much better it is now.
Not only that, but in my last game, with just the AI turned on, I saw three
massive SoD's converge on my empire, and DoW within 3 turns of each other. I was doomed.