Imo it just goes to one thing. Make a vote slider and let people choose the overall general voting percentage given when casting. Just a general "I want my votes to use 57% of their casting power" and set it there. If people leave it at 100% it stays like how it is now, if they wanna change it let them.

Maybe I'm out to lunch here but it seems simple to me, let the people choose themselves what works best for them.