In reply to Luke.

I think you've missed the point, Luke. I don't care (and, it seems, neither does Kristin) how good you make the Customizer because it's the wrong concept to begin with.

Nor do I care (and, I suspect, neither does Kristin) whether the specific front-end editor plugin to which she has linked is the focus of greater attention; the point is that the very concept of a real front-end editor is the way to go, and it's sad to see it so neglected.

So yes, your improvements to the Customizer provide ... well, improvements to the Customizer. But they don't provide significant improvements to the writing and editing experience for most non-techie users.

It's sad to see so much effort and talent so misguided. But the writing and editing facilities in WordPress remain -- strangely, for software that was first and foremost for blogging -- distinctly ordinary.