i've not used the editor because i've organized and reorganized my personal site to my comfort zone over a decade or so, and couldn't see how i could easily bring the entire structure of folders and subfolders into the coffeecup "environment".
from your description, it looks like that's now possible, so i think i'll give it a shot.
now, if you could have two screens, with source on the left and wysiwyg on the right, and one big button that says "upload" the screen on the right when you're happy with it, i'd be even happier... sort of like what MS promises, but without all the other junk they bring to the party....
"The Whole World Is A Tradeoff."