[A6] Future of A6

[Leary, John]

> I'd like to see reception of MIDI POLYPHONIC AFTERTOUCH
> implemented as a modulation source.

Considering poly pressure is the ONLY mod source that can distinctly mod
each voice in a polyphonic patch, I agree 100%.  This feature couldn't be
substituted with any other for performance purposes, and it would make the
A6, already an incredibly expressive instrument, the most expressive analog
I've seen.

The zero-center ribbon idea is great too.  I think I'm most interested in
sonic and performance enhancements like these two.  Editor enhancements are
great of course, and I could easily come up with a huge wishlist there, but
we can make those enhancements ourselves in the form of editor-librarians
anyway!