Concentric wheels (like the Icon) but in a hybrid layout or pure twin cam. Use the cable track alone to control the force-draw curve. Bias weighted cams like the BK cams to reduce recoil by weight moving in the opposite direction as the limb tips (perimeter weighting effect without royalties). Sealed ball bearings. Choice of limb configurations to allow for various brace heights. Should be smooth to draw and shoot, with perfect nock travel possible.

Further development of the Fury X system is another good direction to explore.