The part that confounds me is the "expense" part. What is it that happens when you go for a "perfect 10" as you call it? Even assuming there was one ideal villager, and a player wanted the whole tribe to look like that one villager, what exactly is the "expense" that the player will pay? The whole thing sounds so paranoid, so extreme, that it just completely boggles the mind.
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Runners... never enough runners....