Here's the rig I made for Titus. The legs and torso can be driven by mocap and animated further because this rig integrates the Mixamo Control Rig.
My goal with this project has been, more or less, to do everything possible to make animation easy. This has involved designing user-friendly rigs, which incorporate easily adjustable motion capture. So now, as I put on my Animator hat, I get to reap the rewards!