One feature I've found missing is the ability to disallow certain elements per editable areas, rather than turning them off site-wide.
For example, say I have made an sc-content area for business hours. I don't want the user to be able to place pictures or headings in that area, as it wasn't designed for this content.
Being able to add classes to an sc-content area to toggle unwanted elements would help insure the design isn't broken. I've worked around this by removing elements via jquery, but that is more of a hassle that I feel it needs to be.