I have to agree, that idea is about the dumbest idea I have ever heard. Period. It will never work. No one would ever volunteer.
With that said, I have to respond to some earlier posts about "outsourcing" cabin cleaning. I don't know about other airlines, but I know at United, cabin cleaners are covered under the mechanics union, and it is not unusual for a janitor to be making $40,000 a year. To me that is rediculous, and I have no problem with outsourcing those jobs.
But trying to get people to do that job for free..... hahaha. Ya right!