Hate to burst your bubble, but all hi-end versions of PT9 (HD TDM, Native and CPTK) are still limited to 96 simultaneous voices at 96kHz. See pages 11&12 here:
http://akmedia.digidesign.com/suppor..._v90_69545.pdf
So you'd get nothing out of it at all, except possibly maxing out your cpu. And using the core audio drivers for HD hardware is limited to 8 channels IO on HD interfaces, although I don't know how this affects D-control.