WordPress gurus WPMU DEV are working on a completely new way of letting site owners edit their themes on-the-fly. Upfront is still in development but claims to offer the ability to edit themes live using a drag-and-drop WYSIWYG interface rather than a backend-frontend editor.
Mote details here: http://premium.wpmudev.org/blog/introducing-upfront/
Upfront demos here: http://upfront.pro/
What do you think? Is this a great new tool to democratise site design or an opportunity for site owners to butcher themes that their web developers have painstakingly built?