Alexman had some good ideas back in the day. (And HERE as well.)
... Alexman really was/is quite helpful: his thoughts on Value Changes To Help The AI is also quite good.
He also opined about The key to AI greatness.
I also find Sulla's Critique of Civ3 interesting to ponder. His Thoughts On Exploits is also worth a read.
Some interesting propositions are made by ILA in his "Love For The AI Mod", specifically on Defending against rushes, Improving tiles, Managing corruption, Industrialization, and Handling artillery-units (well, of course there's much floating around the forums about that last one ...)
Here's to ya, Amigo, and I look forward to (*cough*) you posting your conclusions.
All The Best,
Oz
Oz, you really deserve your title of "Civ Archivist"
These are good reads and full of answers to all these questions we often ask to ourselves here.I would also have pointed EFZI2 as one of the hardest AI in a Mod, and I'm glad Vuldacon posted here, but on a random map with all Civ playable it's a very different thing...

Like I said, this was several years ago and I may not remember every ability that I gave the arty, but I do now remember giving the arty a defense, so that they could not be captured.
The Great Civinator -
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z