Bobby,
I agree with you about the MF Handgrip M's straight back cable and USB port location. May I suggest TetherTools TetherPro Mini B USB Right Angle Cable Adapter (Item #: CU5462RT). This angled adapter is designed to extend to the left side of the MF Handgrip M. I have also seen USB Micro-B Male Right Angle (Down Position) to Female Extension Cable (#AD-U43) on eBay. Unfortunately, the Power Adapter cable poses the same problem. I agree with David that LV or EVF are the practical solutions.