Looks like all the manufacturers ( except the component guys) are all in on adjustable drivers. I don’t like the fact that you can’t really change the loft without changing the face angle. Why couldn’t the shaft insert be ball shaped with notches. The hole in the driver head could be cup shaped with dimples. The ball shaped insert is sliced like an orange so a screw from the bottom makes it expand and tighten. You can now rotate to your face angle and tilt and rock to your loft and lie. You need a flexible sleeve to cover the insert and your good to go. Hope I’m not giving away a zillion dollar idea.