Is that what AOPA is proposing? The letter just refers to "sale" of "the asset".
I am very impressed by the letter, and the fact that AOPA appears finally to be getting assertive again, with concrete proposals. However, I'm firmly of the view that selling off Airservices would be just as much a disaster for GA as the sell off of the airports. A more sophisticated structure such as the one to which you allude, QSK?, would be much less risky.