I'm no expert but
just been reading the new Computer Music article on Analogue Warmth, really facinating reading. This guy Fabrice Gabriel talking about all the cross talk and noise we get in the process of analouge summing.
So my question is........if the Reason Mixer is modeled on a real SSL, then have they put all that stuff in? or does it just look like one?
If not, I suggest the Props snaffle Mr Gabriel from Slate Audio or do some sort of licenseing agreement and put a Real SSL Mixer option in the preferences.
I also use Orion Studio and I think Richard Hoffman has put a saturation option on the mixer, judging by how good his Rack Extensions are then maybe the Props should ask him to sort it out.