This is GREAT to hear. Your customers will be VERY HAPPY. A full Editor for Helix (on Mac and Windows) is ideal in the studio. Yes, the interface on Helix is great, but here is my workflow: I create, edit and rehearse in the studio. I use Logic and Live as my DAWs and I have a standup desk so I can play guitar while recording, composing, mixing, tweaking, etc. on the DAWs while standing with my guitar.
In my studio, I move back and forth between composing/editing and rehearsing. For example, I will be working on a verse to a pre-chorus to a chorus section. And I will set up a Helix bank to switch the guitar sounds for each section (verse, pre-chorus, chorus). And then tweak each of the Helix presets, then rehearse the transitions as if I were performing live to see how they sound.
But with Helix on the floor, I am constantly bending down, then standing up, then bending down, standing up, over and over as I compose and rehearse each section and transition. Avoiding this is why I got a standup desk - so as a guitar player I don't have to bend down or sit down to tweak the DAW. It works great, except for Helix - because Helix has to be on a table (to edit) or on the floor (to rehearse). A PC/Mac editor solves this problem.
If the Helix Editor were a true editor on the PC/Mac (able to fully edit just like on the Helix itself), I wouldn't have to bend down and I wouldn't have to place the Helix up high on a table to edit. If the Helix is on a table, it disrupts the creative flow because it make it hard to rehearse how the song would feel live because I can't use my feet on Helix to switch presets.