Bingo.
All your opening bullet points land right on center target and are echoed here in my comments on the @personz post [here] and elsewhere by those of us paying attention and concerning ourselves with a properly acceptable agile style post-mortem analysis, and planning for "next time".
One clarification, I'm pretty sure we were all witnesses at the time of HF19, weren't we? So while it's your first time in a consensus seat, don't sell your history short... unless I'm mistaken about when your team started?