Quick thing Oliver Shiny some of my essays on Medium are already in a published work, so there would need to be some attribution and releases if this became a real thing. My publisher would rather works not be reused for other print books but I think some sort of anthology or journal would be ok, but it would have to be marked as such. A necessary consideration.
I should get better at marking the essays that are re-published by way of copyright though I think I put a book bug at the bottom when I do that.
Just a little legal thing, making sure everyone who needs to gets paid ;)