Isn't that the goal of any character optimization and ranking - to leave the party with more unused hit dice at the end of the day?Unfortunately I still haven't seen Ancestral Guardian at the table yet. Does Spirit Shield help enough to matter, or does it just leave your party with a few more unused Hit Dice at the end of the day?
Maybe, but there's something to be said about a variant human GWM level 3 frenzy barbarian. Getting two attacks at level 3 with advantage that can do 2d6+15 damage each is spectacular.
Now I wouldn't rate it better than zealot offensively early, but with the right build and higher levels it's really not that far behind.