The faceplate will look like this, with deep red knobs.
This module and future ones revolve around a form of synthesis that is more like additive, where specific function blocks allow generation of sinus partials through oscillation or resonant filtering, with similar ideas for low frequency control (most of the modules will have a wide enough range to be used for both). With analogue circuitry this technique means higher signal to noise mainly because subtractive generates extraneous harmonics which are ultimately removed from the output signal but nonetheless can be radiated between sub circuits by the different forms of coupling that exist. It is, however, more complex and depending on the user or the project this may be a good or a bad thing. I've found the oscillator less satisfying to use in some respects than other products, where a single voice and a simple control such as wavetable morph or pulse width can be immediately satisfying. But I don't think there is a good argument against novel synthesis techniques.
In general the production style is to simplify design where possible, but to realise it in the absolute best possible way. Most appropriate technology is selected without regard for aesthetic such as "modern" or "vintage", for example the PCB is a very modern 4 layer type with dedicated layers for power and signal 0V, but there are also NOS parts from 1980-90. Don Buchla said synths should be built from the outside in, I personally give the circuits themselves autonomy in the design process.
My favourite thing that the VCOs can do is mid to low frequency bass (drones or staccato shapes), the ability to detune partials and extremely high accuracy FM really opens up that range compared to drum voices or subtractive mono synths.
2 new modules are in the later stages of development. One is an all analogue physical modelling filter that extends the range of the classic string filter, as well as massively simplifying it compared to Haible/Moog etc. I'm also keen to explore generation of chaos, both for control and as a form of distortion.
im really curious how you get those faceplates done .