Me too. Path of the Zealot expanded the idea of the Barbarian into Divine territory.
Whenever I see subclasses like the Divine Soul Sorcerer, the Oath of the Ancients Paladin, the Tradition of Theurgy Wizard, or the Scout Archetype Rogue, it makes me happy. Because we're taking a class that isn't normally associated with a particular story group (4e would have called it Power Source, but I would argue that Scout Rogue, despite no spells, is part of a story continuum with many Rangers, Druids, and Barbarians that are somewhat Primal or Nature themed).
Here we have the Barbarian entering into the Divine story group. And that's exciting to me, because it provides a new way of exploring divine archetypes, with a new set of ability scores that favour new races, and all in all lend to new character types that may be explored and played. New stories come from this.
I contrast this with Monster Slayer Conclave Ranger. It's a great subclass, don't get me wrong, and I like the idea of the Van Hellsing Ranger. I just don't think it expands the Ranger too far a field from the Hunter Conclave Ranger, who is specifically hunting down monsters, just maybe not monsters of the night (better with focusing on giant beasts, hordes of goblins, or distant foes, so a more generalist approach rather than a Gothic Vampire/Zombie/Werewolf/Flesh Golem Hunter approach). The idea is archetypal and good for the Ranger. But it doesn't subvert the expectations of the baseline class. If we say Ranger, most people think Hunter, or Beast if they're particularly taken to the 3e+ animal companion. If we say Barbarian, most people think Berserker. If we say Fighter, most people think Champion. If we say Cleric, most people think Life Domain. These are the classes at their most basic cores. It's what appears in the 5e SRD too, for that matter. But some of the new options in the books really excite me as they take the class chassis in a new direction. the PHB did this two, like Oath of the Ancients that I mentioned above. But this was few and far between. Now it's like half the book, and I like it!