I strongly agree with your point that pushing back against the kind of groundswell that would be necessary to get Lessig elected would be hard, and he thus stan

I strongly agree with your point that pushing back against the kind of groundswell that would be necessary to get Lessig elected would be hard, and he thus stands quite substantially better odds of getting his agenda through (especially narrow as it is) than typical. That said, I think you miss the parent's point in your last sentence. It would not destroy congress as an entity, but it would change the landscape sufficiently that it safe incumbents would be at risk of losing their seats. That is always what limits reforms of campaign process.