Would the 4th World and the New Gods be off limits?

I think it would be cool if the show slowly introduced some aspects of the new gods. Perhaps Darkseid could be mentioned but never shown; but, however, Granny Goodness and her Furies could be major villains. Eventually, this leads to some of the Furies, Big Barda and Knockout, defecting and becoming allies to Supergirl. Mister Miracle could be introduced, and his and Barda's relationship could be explored.