Yes it's possible to implement things which are hard to get rid of, but one reason these commission are so idiotic is that you can't force future members of Congress to do what you want. The idea that members in 2025 are going to remember what Alice Rivlin said in 2011 let alone stick to any kind of blueprint is absurd. Instead of worrying about a hypothetical future we should be worried about the present, a present with some very pressing problems that maybe somebody should do something about.