FredM,
Very interesting set of questions.
1)I have thought about this in reference to the ThereMax and the PAiA MIDI board. I can control pitch in the Theremax MIDI board, but, I have to find a suitable patch on my Roland keyboard that allows 'PITCHBEND'. My Roland XP-10 has a pitch bend range adjustment of 24 semi-tones. Also, because the PAiA MIDI board does not send MIDI 'NOTE ON' info, I, must physically weight a key,(of an appropriate starting musical pitch),down to intiate a 'NOTE ON' MIDI message. The 'VOLUME' MIDI messages seem to generally apply to most voice patches.
I have never owned a MIDI generating Theremin that was manufactured by MOOG. I don't think MIDI could be implemented better on a Theremin, than the extensive treatment given to it by MOOG.
2)I would like at least a 'pitch null' baseline 'note on' MIDI message being sent to the slave instrument to achieve a lowest pitch reference for theremin control/play. Also, the ability to have pitch bend as well as semi-tone stepping would be sweet. Did I make some sense? I am not totally up to speed on MIDI funtionality ---sorry!
Good Luck, Fred!
teslatheremin