User blog comment:The Ultimate Pawn/Clarifications on Issei's harem and his peerage/Peerage and Harem Predictions/@comment-83.51.140.187-20170428100357/@comment-1.10.199.201-20170507102157

I doubt that Issei will ever want an evil woman. Beside, Jeanne doesn't have anything special compared to other notable characters. I don't think she is worth enough for a position in Issei's peerage.

When consider god-level enemies that are going to appear in the future, anyone that lack potential to become extremely strong (at least Satan-level), are unqualified to be Issei' servant.

That's just my opinion though.