Dear Lugia.
Had a spin last night with my current setup and I understand what you mean. The Modulations I am able to create so far are in the ballpark you describe. I used 2 of the fourmulators LFO's to slowly change the filter cutoff or resonance and had this described "Slow ever changing" effect.
But I can see your example is much more sophisticated.
I guess I just have to get deeper into my setup and see where it's boundaries are. But I am certain that VCO wise I am equipped.
VCA wise for the moment I think I am good but again, saving rack space with a quad VCA as mentioned will help.
Regarding Envelopes. The Dual Intellijel somewhat behaves weird to my ears. In slow mode, if I have all stages turned down and just up the Decay I can only move a fraction of the sliders path and the VCA is already reacting to it. Will have another go tonight but could this be the effect of Linear vs Exponential VCA curve?