We would like to get more feedback on which of the two scenarios are more important to you:
1. The ability to create new pages in OneNote from markdown? OR
2. The ability to recall OneNote pages as markdown?Dave commented
I'd have to say both are important to me, though if I had to choose one it would probably be #1.
Regarding #2 (export), I could see lots of types of content/combinations that are possible in OneNote that might not translate to markdown very well, but even partial export support would be a huge plus.