Side-note: Right-handed people are on the wrong side 
Thanks for all the feedback so far. I love the way this turns into a productive discussion, so I’ll just point out some general things being talked about here:
sineSurfer: the lines feel too thick against the rest of the design
The design itself (colors of the LEDs, lines, labels) is not final in any way. It’s merely a rough draft to show what the buttons are.
sineSurfer: somehow the envelope buttons location feels weird as they are not related visually to anything else around…
Yes. They’d have to be in the top-most row to fint in with the layout. But there wasn’t any room, so they got shoved down there for now.
TK: my first thought: why are the waveform and ring/sync buttons so dominant?
A good point. We’re a bit torn between really only adding the controls one’ll most likely need live and still having a lot of stuff on there that’s neat for programming sounds. Atm the tendency is to get rid of some of the stuff though.
TK: There is no “Poly” engine, it’s called “Multi” engine (as you can play up to 6 instruments)
Right, this is a typo/temporary labelling issue. It’s fixed in one of the two images already I believe.
TK: The modwheel makes “Knob 1” obsolete.
Yep -> will be removed
TK: CutOff and Resonance knobs are too close together.
I find the spacing (which is the same as on my SID) perfect. But, we’ll take this into account.
TK: The modulation matrix is missing
Nope. It’s been left out. I personally don’t miss it at all
It’s being reconsidered though.
Bugfight: suggest adding feedback, which rocks.
Yes. Definitely. Thanks for the pointer, how’d I miss that?
With that in mind - keep going! 