Just trying to throw out a bunch of questions to hopefully drive some more conversation and input from others as well:
So will Tier 1 continue to demand a given planet, regardless of resource cost to get it? Can it decide that "Hey, attacking this planet from the large empire next to us is kind of a bad idea, lets go after some of their smaller enemies instead? The enemy of my enemy is my friend, and maybe they won't attack US instead if we're helping them?"
>Edit: How does the AI see things if they change, such as that small single planet opponent just got annexed by BIG_BAD_SCARY_EMPIRE_3?
How do the various levels of AI gain information to base their choices on? How do they calculate potential profit? Risk vs Reward?
How are the actions/threats of other "Players" accounted for, if at all? Does the AI have the ability to make educated guesses of what other Players or AIs are working towards, and decide if they pose a real threat? (ie, do they focus just on growing in a relative vacuum and expand by picking off the easiest targets nearest them, or do they evaluate everyone around them to prioritize where they attack/expand? A simple 'easiest growth path first', or would "Large Empire A" ever attack "Small Empire B" instead of the easier target "Small Empire C" just so as to deny "Large Empire D" from easily advancing into "B"'s planets?)