Damn........that's a miss for sure.
My regret would be not ever going to one of the Dead shows at Rich Stadium as a kid. All the OP kids would go and really loved it. I do love the Dead.
Worst show: It's a tie between Radiohead here in Cincy 2012, and then Fleet Foxes here in 2018. I LOVE both bands on album, but dang these shows stunk. Fleet Foxes was all sit down, terrible sound, lame crowd. Thom York only played weird new stuff and nothing classic, but that's how some bands do it.