I think the most perfect a villager can get is when they have as much skill as possible in one area (or all? I have heard tell of such) and when they have two likes and two dislikes. I think you're also right about the clothes matching the head, neymar, I've had two of those naturally and one I changed the clothes for. I'm not sure there actually is a "perfect villager" though, the GC certainly isn't perfect

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