Thanks for distilling some key points on feedback. I'm sure they'll clarify your own thinking and help workshop participants as a reference.
I'm not sure how feedback as outlined helps support SDL & 21CCs.
Specifically, which type of SDL along the continuum of self-directed learners? I ask as only two of the 14 how tips start with the learner.
Which 21CCs are uniquely 21C? Very few I'd argue. It might be more about doing 18C, 19C, and 20C skills with 21C tools. :)