I got to try a real review in Krita today. I want to send someone a picture and some notes, then come back to the actual drawing and keep working.
Rick production reference. The Krita review session itself is not pictured.
In the Rick review I could work in Krita, submit the preview with notes, and retain a version of the work. The workflow also supported notes and drawovers on native tasks.
The editable document was the part I wanted to come back to. The PNG let someone see the result, while the source kept the work available for another art pass.
The Rick review and an earlier bundle showed that the loop could work. A later live PNG fallback and a second complete ART pass were still unverified.
I was asking Codex to support a habit I already had as an artist: review a picture, make a note and get back to the drawing with its history intact.