It's something I wish I could do. It's not a system I would know how to implement. I certainly agree that the existing system of tipping doesn't work very well.
We don't have tipping in Australia but in most cafes, restaurants and bars you can expect good service.
A better thing to fix would be to improve people's general happiness by paying them a dependable wage and giving them good health care - you'll probably find they are happier at work and better at their job.
