Maybe I am wrong, but basically the "two-gendered citizen" mod (in A26) was getting quite close (women and men as standard citizens able to gather resources, but had poor fighting abilities).
The only change instead of just depicting male and female citizen with the same gather rates (high for food, low for everything else), would be to determine a gather rate for male citizen and a different one for female, right?
The only difficulty is now to allow creating intentionally a number of males citizen with a certain gather efficiency and female citizen with a different rate. IIRC the "two-gendered citizen" mod just arbitrarily added two different avatars with the same properties.