Whenever I see "new rich HTML editor", I notice that there is no table editing. What's the point of editor that is missing the most needed function? You could argue that it is not needed, however lack of this function leads to cases of copy-paste from word/excel with bad markup.
What is a table editor would essentially be a database query, with data coming from your CMS or some other system? Then instead of building a generic table by hand you could do things like Insert a table of attendees of this event, with columns displayName, company, and email.
I'll try to do some experiments with this in the summer.