One thing that I would find very useful – though I'll be the first to admit that it might have fairly limited appeal – would be the ability to be able to use an aux switch to be able to toggle between Source Instrument settings, i.e. between Guitar and Bass for example.
I do live looping ambient performances where I often switch off between guitars, basses and Chapman Stick over the course of the performance; it would be great if I could change the Source Instrument setting on the fly quickly using an Aux Switch that way.
