Not true in all MP games, but I see your point that MP games are played differently.I would prefer not to make AI more like MP humans. MP games are different, and are typically played aggresively. As in, conflict starts early and the focus is on military action. In fact, everyone plays warmonger style there.
What if then, the AI's are all peaceful scientists and you are an aggressive player? This would be very hard to balance to make sure the AI's didn't get crushed in the first 100 turns, considering peaceful players need a lot of time to establish their infrastructure and a considerable science lead.In SP games, I want to be able to play them how I like it, warmongering or not (I know that warmongering seems to be the most powerful strategy). And consequently, I'd like the AI to be able to put up a challenge in the tech race if I'm peaceful and in combat if I'm fighting.
An idea for this might be changing AI personalities for different situations and game settings. Small map the AI plays aggressively all the time, gigantic map the AI starts out scientists until it finds out how close the enemy is and decides from there, also based on diplomatic situations etc etc
Builder strategy was very good in CtP1, there are 2 reasons for this (I believe), one is that buildings had much higher benefits, and two it was easier to defend than to attack. I think its definitely a good thing in a civ game when its easier to defend than attack, I tried to improve this in the MP mod.Mind you, one of the changes I think needs to be made is more benefits for builder strats.