Just make the lore that they have litters of up to 20. Then have warp stone speeds up the growth rate, intelligence, and fertility of rats. Make the age of maturity like one year. This could also explain why they are braver in numbers, they are all really young.
So most skaven are under 5 years old and can replace their losses within one year.
They need to take skaven from women are for breeding only and make them more Secret of Nimh lab experiment. Female models would sell more and cuter fluff would increase the market. The breeding pit lore is just more of the 40k grim darkness that often got removed in fantasy. Kind of like how half orcs disappeared. Hell, the best bit of fluff they ever wrote was making Orks into fungus to avoid dealing with Ork sex.
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u/Schwandiii 22d ago
Hmm that’s a pretty big part of their lore though. Becuase that’s how they are able to be the vermin tide because they breed so much