I've thought about this idea quite a lot and shared it with a bunch of people. I've found that having that third day off (taking it as a vacation day to experim

I've thought about this idea quite a lot and shared it with a bunch of people. I've found that having that third day off (taking it as a vacation day to experiment) definitely helps me personally when it is adjacent to the weekend (e.g. Friday or Monday). However, I can totally see the need for having this third day be in the middle of the week to break up the week (e.g. Wednesday) or help with things like doing chores and getting to appointments when other people are working, but you're not. As a result, I think the third day off is most useful when you get to pick which day it is according to your particular circumstances. I know having the day be flexible adds additional complexity, and even the risk of it not being taken / pressured into not taking, but I think it adds the most utility for everyone.