Great, I guess I wasn't a total idiot anway then
Well, even though the signal is totally wet, I can't use the AUX procedure anyway. Since only one of my Aux is prefader, it will always route the signal to the same channel on the compressor, which makes it a bit hard to use sidechaining

If I send from aux2, the signal will indeed be mixed since this is post-fader, and then the wet signal is mixed with the dry.
Does anyone know what a 8-10-channel (4-6 monochannels) mixer with insert-points costs these days (both new and used)?