VCO +- output, was [sdiy]linearize OTA for VCF?

[Benjamin M. Woenig]

I have some similar questions relating to scaling and offset
voltages within a modular system.

I am building an(other!) analogue sequencer at the moment, and I am
wondering
what CV ranges I should have on the summed outputs for each channel.
Roland equipment (like the SH101, 303 etc), appears to accept 0 to +7V
for pitch CV and +5V (or greater) for gate signals. Most modular equipment
I have seen has -10 to +10 CV range. I would think that a pot on a sequencer
step sweeping the entire 20V range would be too "touchy" to get a precise
pitch. What is the minimum voltage to trigger a MOTM envelope generator?
+5V? +10V?

Since I will be using my sequencer with Roland, Korg, Moog, and MOTM
synths, would it be best if I had a switch to change the CV outputs from
either 0 to +5V (for Roland gear), and -10V to +10V with a range pot so
this could be easily scaled for the other gear?

~ben