I would like to suggest that when building a landing page, that there should be an option to make the dynamic content that is being added a child element of the container in the template. This would allow for fully responsive designs, as it would remove the absolute positioning of all the mkEditable elements.
Basically what I am proposing is to create a "window" in the template where the dynamic content would be placed. This would allow other memebers of our team who arent necissarily developers to make use of the dynamic content features that you guys provide. While at the same time would provide us with flexability in designing landing page templates, as all we would have to do is leave the area where content would go "empty" and the other members of our team would be able to enter content, and not have to worry about positioning.