It's not about making it easier on the leg, it's about increasing the pedal ratio for shortening the pedal throw to full disengagement for shifting. You dont have to press the pedal as far to disengage for shifting.
Or, the low tech way to limit clutch travel is bolt a block of wood to the floor under the carpet. As I recall, plate departure for a borg and beck is .080, while a diaphragm only needs .030. Or something like that.
