hey, yes - that would have been my question indeed. Good to meet up here then ;-)
Found a bug in Jan's DSP, he sent me a new one but I have to send the old one back too - Sweden's a long way out sometimes haha.
I have the 'Moog slayer knobs' on my poly which is nice to have the filter under 'real' control but like you're showing, with the HAWK you could change VCF with a DAW. That DSP-G1 Project I did was also about building potmeter control in the midi stream and merging in with incoming midi signals.
If this worked I could build this into the poly800 and set a bunch of potmeters on the poly to control the HAWK800 EG parameters while still receiving MIDI in.
However, it worked for 95% to my liking but on some occasions things got delayed in the midi stream somehow. Then payed work came by and now it's been laying around ever since...
Would like to get the filter mod though, I hope you can find the time to look into it a bit more.