Just wanted to initiate one more discussion about this.
I've been watching lots of people dissatisfied with the Kemper because it has no interface/Editor. USB is another less frequent reason...
I love my Kemper but here's my very briefed conclusion: In 2 days, we'll be living in 2014... And, even though I can live without an interface and USB, Kemper will always lose costumers or possible costumers because of the lack of an Interface/Editor, USB.
I see people migrating to Axe FX or even to BIAS/Jam Up.
In a world where things are more and more portable, convenient and accessible. Kemper with it's USB formatted drive will stay behind his competitors. I believe in the gear I use and I want Kemper to thrive as they can and, IMO, should.
No one, in this century, wants to download tons of free rigs (without even hearing them!), put them in a USB drive, plug it in Kemper and, only then, test them.
Rant over... The (WIP) foot controller is good progress!