As a former Helix user, I can attest to the immense reliance I put on their PC editor. Not only for ease of loading things like IRs and presets, but the simple fact that I didn't have to bend/lean over to tweak the unit (which was very simple to use in itself). However, my one gripe with the Helix, is the depth of tweaking the editor allows (and how easy it is to get carried away with it). I found with the Helix that I spend so much time tweaking the sound, I didn't spend much time actually playing my instrument.
As I am obviously not a "tweaker" by nature (I gravitate towards a set-it-and-forget-it method), not having an editor from Kemper is not a real deal breaker for me. Clearly, one would be able to tweak to the same extent on the actual unit, but the convenience of using a mouse and keyboard is definitely in a league of its own.
This being said, I can empathize with those of you who are frustrated with no editor in 2017. /rant