Just wanted to second this request for multiple folder sync. I use Editorial to sync my notes folder, and I want to maintain a completely flat folder of many small notes files there. But I would also really like to use Editorial for bigger documents, especially with some of the new features in 1.2 and the possibilities with iOS 9. Some of those documents I want to share with collaborators, and I'm not comfortable sharing things from my personal notes folder.
Side note, you don't have to use /Apps/Editorial as suggested above (though I think /Apps/Editorial is the default). I'm using /notes. You can pick any folder to sync right now, but you can pick only one folder, whichever it is.