Crikey! Looks like a scan made on a REALLY crap quality scanner from the 80's!!
But I'm definitely feeling more knobs on the Combinator (fnar, fnar!). It's a frequent request to have 'Combinator 2' that's a bit more heavy duty for more advanced control tasks. I'd like to have the option to expand the Combinator to 8, 12 or even 16 knobs. But to be honest 8 would be a massive improvement to save having to squeeze essential controls into 4 knobs.