A few thoughts (sorry I haven’t read every post)
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You can’t tell what gender a baby is by appearance with or without nudity. A Mum can when she clicks on the child to feed - so can name appropriately anyway. And people might just be looking to see their own gender to suicide. IE be male so you don’t have to deal with babies
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Could you release 2 apps. One with optional nudity and one with no nudity and play on the same server so you arent diluting community
 
 I feel it will lose a bit of its artsy feel but you have to do what you think is best.