As noted elsewhere, I've always kinda sucked at dialing in basic tones no matter which amps I had, so I really enjoy the ability to just select a profile that's already "there" for me and play guitar. And yet, I'm quite looking forward to the editor.
Where it will be useful for a guy like me is the effects. I'll still just select profiles that have the base tone I'm looking for, but often for a cover band thing I'm looking for the signature sounds from the record. For example, it was easy to find a fat rock profile for Still of the Night by Whitesnake that didn't require any adjustments, but there's also a middle section with arpeggios that has some delay and wobbly bits in it.
I was able to find the effects and tweak the params to match what I wanted using the toaster buttons and knobs. I do usually prefer hardware interfaces, e.g. a Mackie MCU for my DAW, but in this case the small screen means lots of paging around. Of course, that's just a design reality for this sort of thing as there's only so much physical space available on the front panel.
So, even though I'm not what you'd really consider a tweaker of tones - which is pretty much a required talent if you're using a Line 6 or Fractal product - there are times when I do need to dial effects in. It'll be nice to see how much easier that becomes with the editor. From the brief videos I saw from the trade show floor, it looks like it's nicely done.
You mind pointing me to that Whitesnake profile?! Thank you either way!