Please add a visibility button to the Designer and CMS Editor frontend so you can select "Only visible in Designer" or "Draft Mode" to page sections or elements.

If you have a page section (or div) that is still "Work in progress" but you also made changes to other page elements, there's no way to PUBLISH your website without manually "hiding" the element that's not yet ready.

It get's even worse if someone is working as an CMS editor and publishes his changes without knowing about your ongoing changes. It get's messy.