Sure, but you still have an infinite number of possible inputs, your model will only show that on certain note combinations at just the right volumes you get sub harmonics through intermodulation distortion if you find those note combinations when you build it. Musicians are very good at finding and exploiting these quirks of equipment, they are what ultimately define the characteristic sound of given bits of gear (and the musician's) and are what companies in the modeling business aim for, they get a dozen or so of those characteristic sounds and fudge the rest through a mix of techniques like interpolaitng the difference. But you can not get them all and the only people who end up buying the tech are the ones that primarily want those stereotypical sounds and that is getting to be a very crowded market.

If someone really wanted to use such technologies to be a game changer they would forget about the past and use it to design something new that exploits its strengths in a way that is natural to the musician instead of showing off its weaknesses. The potential of the technology is quite amazing and yet everyone uses it to chase nostalgia.

I am doing things in just about the most idiotic and inefficient way, break the circuit down into easy to emulate blocks then emulating how they interact by adding in stuff which mimics that interaction.

Essentially I break down the circuit into a series of blocks which are easy to model in isolation and then show how the interactions between these blocks are very complex and difficult to model. The starting point is essentially the classic simple moog model with some extra stuff and I add in bits between those blocks to mimic the interactions while comparing it to various digital models of the filter, spice simulations and the real deal.

So I slowly make up a big massive mess of a patch in PureData that eats my entire CPU but does a fairly solid job of the emulation then try and simplify things down to show how each part affects the whole.

A very simplified version of the component level. Component level is very good but not real time unless you sacrifice a fair amount. Ultimately it is a bit of a wash between other methods, just shifts were it fails and where it succeeds to somewhere else.