Doyle is known for working on Tomb of Annihilation. This is just an excellent complement to the initial storyline. I'm actually doing the ToA hardcover after running 72 hours of Mezro in all tiers. My players loved it, and the rewards were quite nice. Exploiting another city to make other stories happens within the same jungle while not giving emphasis to the actual tomb but rather some other storylines presented in the hardcover was well done. I've loved the multiple details and I've even given the Heretic background (through a custom background baseline) and been enjoying the character ever since. I even got to put a sphere of annihilation with the high priestess in an actual other plane and they all shifter into a demi-place at large. It was a blast doing the whole thing in multiple tiers with multiple on the fly tables.
Well done 5/5
[5 of 5 Stars!]