>>214673082
In the words of Saint Berman, "We've hired a pretty girl and I want to keep her that way." The entire Bajoran aesthetic is designed around Michelle Forbes, and is peak Star Trek alien design. Just something a little different like blue skin or pointy ears, no crazy cg stuff, because then you connect more with the character than if they were something abstract and unapproachable.
The show's entire philosophy of meeting aliens and growing through those relationships is summed up in her face.