I love Louis CK
The show was a little awkward because Ricky is from a different comic background, and the other three clearly knew each other for decades. Nothing that Ricky was saying seemed relevant to the others' stories. I couldn't tell if this was supposed to be a Ricky show, and he was in some sense a moderator or presenter meant to keep things moving along, but it was little weird trying to figure out Ricky's role.
Otherwise, I found the show entertaining. Louis CK and Ricky seemed to be battling over who could talk the most, but I was honestly more interested in Louis' stories. Listening to Ricky attempt to come at comedy from a higher morality and integrity was a bit strange considering the level of (in my opinion) clichéd pandering in his last HBO special. Jerry is an enigma, and I feel like he's sort of a fuddy old man, but I think he contributed pretty well to the dialogue. Chris Rock seemed to get shut down quite a bit, and the others mostly seemed to talk over him. That was odd because he seems like he would have been a more assertive type.