Have there been any DDF discussion outcomes that you've thought "Well, that is just crap" Or the inverse "Crap, why didn't we think of that, it's so obvious".
Could you (would you?) tell us what they are?
There have been plenty of instances of both to be honest which I guess can't be helped when asking for a large group of people to talk over a proposal. There will always be someone with a far-fetched idea chiming in and someone else revealing a huge flaw in our proposal too.