Agreed. Cockroach King and 1985 are the only automatic “gimmies” that I can think of.
Strong probably’s would be Endless Knot, In Memorium, and I think at least one song from Visions with Deathless being a top contender.
Agreed that I don’t think we will see any epics at all unless it’s the new one.
Firstly, I'm going to assume 90 minutes since this is a co-headlining run, want more, but logistics might not make it possible. Keep in mind on the Affinity tour Haken played usually two hours while TYS played one hour. So 90 minutes each for Leprous and Haken would make sense. And with Bent Knee a nationwide opening you'll likely not have enough time for two hour sets in most places.
In specific reference to Deathless, highly doubt that. They only played one song from Visions the whole of the Affinity tour (minus ProgPower), and that was Deathless. While I loved seeing that song live there is no reason for them to bring it back into the fold as a nightly staple so soon.
As for staples that will be in, there is definitely an Affinity problem to navigate around. They cemented certain things as "moments" during the very extensive touring they did for that. 1985, The Endless Knot, and The Architect all had big live moments, Red Giant had specific merch dedicated to it, and Bound By Gravity is the only song they haven't played yet. Because of that last point I really hope they do play BBG, but with the new album probably taking up at least 30 minutes of the set, and realistically more like 45, and Cockroach King likely taking up 8 minutes, you probably have about 40 minutes of that to dedicate to all the other material.
So the big question for me is, given that they JUST played so much of that material so often how much set time does it get this time around? Personally I hope BBG gets in, and while I have preferences for more Affinity material beyond that if they are playing more, I kinda hope they keep it to just BBG and hit some lesser played stuff from the other albums.