Hi Kemper Swarm,
TC released a new Looper, that listens to the band and stretches or compresses the tempo of the loop, depending on the tempo of the drummer! I would really love that in my kemper. We have a looper inside, and since there is a Mic input on the back...
here is a youtube link the TC device:
And while the the kemper team is on it: the Digitech Freqout and the TC mimiq pedal fx would also be a great addtion to the internal Kemper FX!