Not a new concept. Forget the name but it's similar to a product that the test mags raved about back in the 70's.
Oil is basically a non-compressible. These devices add a liitle side chamber with an air or other gas piston to create a cushion that "excess" line pressure can work against.
For all the effort that many go through to achieve more pressure at the calipers, braided lines etc., this does the opposite.
I've got an early model with the HD brakes and have never felt I had too much brake.