If it were that easy, aside from the other drama, I'm sure it would have been added a while ago. I'll bet it's that much different from normal drives it will take some re-work to get it in here.
This... It's a weird pedal, because the drive knob isn't a drive modifier, it's a mixer. The circuit effectively has a TS style drive side, and a clean boost side. The guitar signal is split to go through both, and then summed back together again through the circuit controlled by the drive knob. Little bit of secret sauce in the clipping diodes, exceptionally high clean headroom in the boost circuit due to pedal running at double the rail voltage of most drive pedals and boosts. For anyone that's saying it's emperor's new clothes, it isn't. It was revolutionary when it came out because it has exceptionally good feel and transparency, and is an amazing clean boost. It also has failings in that it doesn't clean up that well when you roll the volume back, and could be seen as a bit of a 2-trick pony.
I'm not sure it would be all that straight forward for Cliff to model with existing Drive block architecture, but I'm pretty sure if it was available a lot of people would like it. FET Booster and TS in parallel could almost definitely achieve the same thing, but I think I'd be playing around for a long time figuring out where to set each of them to get the same approximate dynamics and tone.