Regarding predetermined setlists.....I think it's clear they have some communication before shows in terms of general direction and some songs they definitely want to play, with a willingness to be flexible.

However, at the risk of sounding heretical, I am so tired of hearing about the FYF show from Dick's. I own it and have listened to it a lot and I'm telling you it's extremely overrated. The Runaway Jim is a pathetic mess, that Trey surely would've ripcorded at about the 8 minute mark if not for the fact that they needed to stretch it out to make the gag work. It really is an uninteresting uninspired mess and it's clear these days that the song no longer stimulates them. The most interesting part of the show was the Undermind jam and the transition into Farmhouse. Otherwise the show had zero cohesive flow and was downright jarring at times to listen to.
The two shows on 9/1 and 9/2 are far superior.

My point is one made above....long jams aren't always the answer. AlbanyYEM makes an excellent point. More songs means more repeats.

IT'S ALL MAKING SENSE NOW.