I guess that WOULD be a good thing for that group. I can't see how it would give full movement to fully disengage the clutch, though. Bigger piston = less movement for a given volume of fluid, doesn't it?
Many have commented that they do not like the release point. They would prefer it closer to the bar. This should require the clutch lever to move a little further before releasing (would need to move more fluid). Might be a nice change for release point and effort.
Isn't there a way to change the fluid dynamics so that the existing fluid could be compressed into a smaller space and still allow the full travel needed? Perhaps keeping the area inside the piston the same area but expanding the outer dimensions of the piston?