In this case, it means that the repetition of specializations already existed, particularly in the third installment of the game, and no one really complained, so why not do it? Well, maybe I was too worried at first... Although, if given the choice, I think it would be better to create something new, rather than repeat what's already been done.
Essentially, I'm leading up to the fact that implementing an opposite to Tanna fits very well into the classic game design scheme, and besides, creating her mechanics boils down to replacing dark entities with light ones!
Sincerely, Psatkha