If you’re looking for a way to edit long-form articles, may I recommend this technique from C.G.P. Grey. I’ve using it a few times for another blog I’m maintaining and while I don’t use Editorial, I do export the articles as PDF and mark them up in GoodNotes with the Apple Pencil.
I’ve found this technique usually results in better posts. It’s probably because of the shift in mode and location: I go from producing the words on my desktop, to deleting or rearranging them by hand on my iPad in a different room. I’ve also found that it is a lot more enjoyable: I actually look forward to editing this way.