Sometime it is very useful, to prevent editing of rich text content of a form, while the rest of the form should be editable. And sometime the rt content should be editable, too. Depending on user, document status etc.
Nowadays you either have to use a controlled section (ugly) oder handle with different embedded subforms. The latter always causes trouble when for example the rich text contains an email with invalid embedded images (causes "can not save bitmap to disk")
Please give us more control for rich text fields!