I agree. While I am not yet sold on this version of Darkseid, this approach has had a great benefit of not having a new "Big Bad" as main cast member.
Both Davis Bloome/Doomsday and Zod where diluted by overexposure. They had to be function as the main villain of those seasons but also as supporting cast members. Appearing in many episodes to justify their presence. But only resulted in their arcs being too drawn out and taking time from other cast members.
Better to save the Darkseid characters to episodes that actually further those episodes. So that the so called "filler episodes" can focus on the other characters.