It's weird that SOME covenant-themed spells are on talents, but not all. I was a Venthyr paladin, I've got the Darkfallen skin and maw armor, there's no need to bring Bastion magic into this.
Throw in Artifact and Azerite spells too. It would honestly be a great way to bring back old borrowed power spells, just giving us a choice of like a dozen different axed abilities all on one level-50 node.