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DJ,
What you sketch is physically equivilent to a normal articulated rotor head, with the added stress riser (weight increase) of the bend in the hub, which sees awesome CF loads (yes Lu, CF!).
The lag hinges are needed for the hook's joint issue as well as the need to reduce vibrations due to unequal blade drag during the blade's trip around the mast. Because of the hinge offset, the shear forces and moments in the lag axis are amplified and must be relieved.
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