That is a cool approach. One can build an ad-hoc kanban system within Vim this way!

I gotta be honest, I'm slightly horrified that I nodded while reading this comment because I can see how that would work: multiple splits opened with `-O`, then some leader-key shortcuts to move paragraphs up and down within a split, and to move paragraphs left/right to other splits.

At most you need 4x shortcuts - shift paragraph up, down, left, right.