I wonder if there was any ever thought given to the possibility of splitting these new bitstreams and sending one part out the digital coax connection and the other out the toslink connection. Perhaps fronts and center on one, surrounds and LFE on the other. Obviously it would take major firmware updates on receivers and pre/pros. I'm not even sure two S/PDIF have enough bandwidth or if there are other limitations I'm not aware of that would make this impossible...