1. processing of piano sound, 2. deriving cv from your playing the piano to control modules.

Yes, these are the two current options I have in mind.

One feature I would definitely want in there is a pitch to voltage converter.

Looks promising. Are there other pitch to voltage converters that are not so exotic? The RS-35 seems not to be easily available...

Plus more more ways to get cv out your piano. Maybe from the pedal?

Good idea, anyway I need to be portable to other instruments, as I do not want to bring my own grand to the gig. ;-)

Curious what you come up with in the way of processed piano!

I'll post sound snippets maybe this weekend. Promised...