I think that the AIs should be as diverse as possible AND that the player can choose whatever compination he/she wants. I am slighly enraged that there now isn't a single civilization with the Scientific and Industrial attributes - something I was very much hoping for.
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... This body holding me reminds me of my own mortality...
... Pain is an illusion...
I agree with you Cybergod, it seems reasonable that the player can choose the combination he/she wants.
But we shouldn't forget that Firaxis has already tested the game; maybe the scientific/industrious combo was too good?
(or too bad )