I’m with you 100% on this. There’s a reason why pro gigs have set lists and the group plays the same set/songs for 200+ nights in a year. Everyone plays better like this.2 of my 3 bands are like this...everything is planned out and runs the same. My OCD loves this way of doing it. I am never uncomfortable in those gigs and can give 100% to each song...we even plan audibles for if time gets cut short, or the rare, rare occasion where we get to do an encore...we even go so far as to visit the club before hand to plan where load in, set up, storage, parking etc are if we can. Given what i do at my job, I am a logistics and "crowd control" kind of guy...I want everything to run as smooth as possible
My other band knows about 120 songs, and never runs with a set list...the leader just calls em out. I am always super stressed about those gigs...BUT...they are teaching me to be adaptable, and the test of keeping on my toes is awesome.