Yeah I kinda noticed that. I used to run Mordred with sniper shot instead of Andromeda but I noticed that I lacked the sustain from healing which made it a lot more difficult than without the debuff. I did try Joan with sniper shot too but that fared much worse than just using Andromeda or Mordred with my dark team.
The only other dark hime I have are Tsukiyomi and Astaroth. I was hoping I didn't to save up those jewels to try and roll for some debuff kamihime than. Trying to get Hades did not end well last time.