>>96823869
My solution is way easier
>custodes keep the female retcon
>sisters of silence stay all female
>custodes and sisters are decoupled
>sisters are coupled with grey knights
>grey knights join the 40k's talons
>>96823076
an all male and all female dichotomy is maintained, custodes stay this more flexible form pinning the emperor's forces, no fluff about the custodes or the sisters is changed significantly, less codex bloat