So, as I can read, there will be no more back-end editor in version 4. That's awful! I understand that version 3 will be supported for three more years, but when it reaches the end? no more back-end editor and the problem will still be there.
With version 4 I have to click at least one more time to go to the editor, it opens another window, and the chance of leaving checked-out articles will be greater than ever.
Also, I have javascript transformations that modify some add-ons on the front-end, and editing in the front doesn't show me those transformations.
Finally, I have some kind of clash with my template's javascript/CSS and I cannot edit anything. I will have to spend a lot of time debugging something that was working (almost) perfectly in version 3.