Euuuurp!
that Midi Pedal in the vid is the way to go with this and software seq, wish I would have got one on the first run.
I love the fact that you can get it to return the CC values back to 0 automatically, try doing that in CV hardware and you are looking at some expensive motorized pots!
my only regret as I mentioned earlier is that there is no Hot Hand signal OUT (control voltage) for other analog FX on the Midi Pedal (like the one guy does with the Moog but there are on other HotHand compatible pedals) that would be helpful for controlling parameters of analog CV based hardware at the same time as software....a limitation tho that I could probably live with, they do have Midi to CV converters...tho they are rather expensive so finding a device that puts out CV already is a +...
up to four at once, WOW, that could come in handy, I am a bit confused however as to what that would look like, 4 individual receivers? or all four on one? and how one would go about splitting those signals out to various devices other than a single software sequencer like ableton?
other than that USB receiver it looks like a hothand stand alone signal router with 4 dedicated CV outs (and one midi) would be something people would be interested in, I know I would.

Moog charges $400 for something similar (CV controller) but it was not wireless, there was a bluetooth wireless pedal-board out a while ago too, but it was only for Mac.
as far as filtering those 4 signals into Ableton for anyone I would suggest Midi OX/yoke, in theory this could be used like a theremin to not only control notes on a track, but to trigger/play them as well, bringing air guitar to a new level!
keep shinin
jerm