While seduction has its place in my vast arsenal, I realize that "evil" and "skanky" are not mutually inclusive. Royal Dressmakers unable to realize this fact will be flayed alive in the presence of their replacements.
If I require my Hag or Crone to poison someone, I will require the poison be quick and deadly rather than a mere sleep aid.
My Amazon Hordes will wear full body armor, rather than three small triangles of chain mail, which are reserved for dress occasions.
I will neither repress my Beautiful but Wicked Daughter nor smother my Handsome but Evil Son. It's hard enough raising a ruling family these days without extra dysfunctional baggage. No one wants disgruntled offspring suddenly "seeing the light" and turning Good simply because mother dearest gave them an unhappy childhood.
The appearance of weakness can be as useful as the appearance of strength. I will exploit the double standard for all its worth.
My poison-fanged or -clawed beast minions will not be spiders, snakes and ravens, but kittens, goldfish, and canaries.