I do not understand actually wanting the changed, dumbed-down creature.
However, I believe that Kratzean's doing some of this in his BW/CI mod...? I have not followed it very closely because I do not have CI.
As far as the very technical aspects, not getting my hands dirty actually learning or thinking or doing anything, unlockables based on the total value of a village sounds very do-able (if not easy, I just mean it would not take majour refiguring of how the game works), epic miracles I am 99.9% certain I remember being a listed feature of Kratzean's Megamod, and the auto-building might be feasible, though I am not certain. The others I do not know about.