Another option: try a bell crank hanger: https://www.sjscycles.co.uk/brakes/t...ilever-brakes/

They're similar to the old Cannondale Force 40s, which back in the day recieved great praise from MTB Action. They supposedly boost braking power 40%. These add a whole level of additional arcane adjustments though

A side benefit of these is that you don't have to worry about a snapped cable sending you over the bars.