Damn, and here I am wondering if I need to drop the difficulty down because of the Myrkul fight after having scoured every last bit of XP I could find in acts 1 & 2...

Personally, I feel like the 0HP Larian houserule (where you have only a bonus action after getting up) should be relegated to Tactician and any theoretical harder difficulties. I will say, I do like the enforcement of 2 short rests per long rest, rather than having to juggle hit dice -- might just steal that houserule for my own table to speed things up.