Ludens, what do you mean, when you say that "AI has no concept of managing population"?

Does it mean that the AI doesn't even consider the effects of overrecruiting on the population size?
If that's the case I think it's logical to give back some percentage if the population falls below certain limit. But if the population is restored completely after recruiting a unit I think it's too drastic measure. After all AI should collapse militarily after losing too many soldiers is a war. That would add more accuracy to the game.