With the Axe Fx alone, I could not care about an editor.
With multiple pieces of gear like I use to run years ago, yeah that’s a bit different. Mapping presets alone would have gone allot faster if the All Access had an editor (and that’s also an easy unit to program) And then there was programing the IA switches per preset, and getting it right the first time. So in my case it was usually 3 midi devices to map and of course the IA’s , if I was rearranging, yeah it could take a bit of time a edit or two was not that big a deal.
But the AF II and MFC combination has got me so lazy, I don’t even brother mapping presets any more thought the MFC I just go to Axe Edit and just fly the presets to the locations I want in the AF II. Very quick great visual seeing everything in front of you. Best part (at least for me) no IA’s to program per preset the AF tells the foot switch what state the IA’s are in, no accidentally leaving something on that should have off and of course the opposite. But that’s me and way I use it.
So yeah I think a editor would be a great addition, I sure guys with multiple midi devices like I use to have would be very grateful. There is even a few situations were just AF and MFC could be handy, like mapping alternative presets, this still would not brother me ( I have my methods). But everybody’s needs are different.