It's probably a standard at academic conferences, but I'm (positively!) surprised by the quality and detail of feedback I received for my Workshop submission!
Now it's my turn to incorporate that feedback and hopefully improve the talk. We'll see in October how it turns out!
And what about stealing that approach: a peer-reviewed technical conference - would that make sense? Preparing slides/papers upfront is something that's uncommon - but maybe we could also get unprecedented quality?