The loss of being able to select text and make it a header (or something else) is just too much. I can deal with the other stuff that went away and into WP Edit Pro. I do not LIKE it. But I can deal with it. I also think your pricing is too high on pro for one site use. And way to high for multiple. SO I'm using this plugin until I can find something better.
I think you should have talked to your USERS first about what they thought of your move before you made such a huge change. Fortunately I know HTML and CSS so I can still make decent posts/pages. BUT YOUR change has added to the time it takes for me to make those posts & pages. And THAT is a deal breaker for me.