I reckon Christophe could make an Editor in his sleep, no problem.
Do we really need one, that's the question?
Usually we want a PC Editor because it's so difficult to tweak on the unit itself.
I remember when I got my HD500...after two days I had pulled muscles in my neck and back, I felt like I'd gone 10 rounds with Mike Tyson., I never wanted to bend down ever again.
For me the KPA is the PC Editor, it's like looking at an Editor on your PC screen, instead of using your mouse you use your fingers.