This may not come out well; if it sounds like I am pissed about it, I am really not. But I don't buy this "it was understood, it was common knowledge." I get there is no specific point where knowledge goes from "uncommon" to "common," which is maybe where I am getting stuck on this. It's your show, you can do whatever you like with your set, but to do something most would consider out of the norm (committing an hour of time to cover material), and fall back on the stance of "It was commonly understood something like this could happen..." based on internet communities is weak.