Not to be dismissive of your idea, but isn't this decade(s) old? QT Creator, Dreamweaver, Wordpress, etc... All are in some form a "drag-n-drop code gen" tool.

Not to be dismissive of your idea, but isn't this decade(s) old? QT Creator, Dreamweaver, Wordpress, etc... All are in some form a "drag-n-drop code gen" tool. Could you elaborate on your point and how it differs from the existing codeless tools?