[AndyNemmity]

"It would be cool to see incredibly rare behaviours"

Working in game design with complex AI, I can tell you that the last thing players ever want is rare behaviors. They tend to think of these things as bugs even if they are simply that, rare behaviors.

Then again, I've been working in game systems where the rare behaviors are sometimes positive and sometimes negative for the player. Given this, the negative ones stand out as "bugs" even if they are not.