A mod that changes the growth rate of beasts, furies, and harpies from 5 to 6:
Download https://yadi.sk/d/CPFp9FYGs7aKd
A mod that changes the growth rate of scouts, assassins, and archers from 7 to 8:
Download https://yadi.sk/d/3tws4ej5s7XW5
A mod that changes the growth rate of assassins, executioners, and chieftains from 5 to 4:
Download https://yadi.sk/d/nPx8J231sCdkJ
Place these files in the UserMODs folder.
P.S. Best regards, the author!