Seeing the new vocoder, and the Midi In to play the synth inside made me think of this. Essentially most of the features of the Hazarai Looper (filter, reverse, stacking, etc…) but with a Midi in to play you loops via keyboard, msp patch, whatever really…

You could have a sampler on your board that could be manipulated by a keyboard player, you could just record loops and mellotron out on them….

I suppose it would need to be Polyphonic and have a small modulation section as well.