I use the campaign interface and editor for very different things and certainly wouldn't want either to become some sort of middle ground and lose functionality.
I would also be worried that moving closer to the campaign interface would slow it down, as the volume of information required may increase, creating something a lot more clunky.
Of course if it was a purely cosmetic change none of that would matter :)
Maybe G should just offer a webinar once a month or so that covers the basics of using the tool?
Once you learn the tool, it is very simple to use.