Thank you so much for putting together this feature list (especially appreciate the detailed examples)! We'll look into what we can add onto our Roadmap :)
Viewing post in Feedback & Feature Requests
The good news is we have since developed a Deck Editor extension which takes care of #2 as well as #4 and #6. In fact, it's been almost exactly a year since Vibrant Fervor's initial post and we've added most of these features in some form or another.