One final thought, and this is based on my own experiences as a politician. One thing that I think is a problem is the erosion of legislatures, the erosion of parliaments, the ways in which the site of our democratic debates is simply emptied out. One of the most shocking things to me as a democratic politician elected twice is that nothing happens in the Canadian Parliament. It's an empty shell. Same thing in the Assemblée Nationale in Paris. That, it seems to me, is a systemic problem. And I'm not quite sure what the solution is. So, we've got a lot of democratic institutional reinvention that we need to try. I would start with trying to fix what's wrong with our legislatures.
This seems to be a common refrain - "legislatures are broken", but I haven't really head proposed solutions other than things like the Reform Act (Canada) that are either unlikely to do anything substantial or, as in Australia, just lead to continual and often ridiculous bouts of instability. Mostly it's just a complaint about peoples' behaviour, which is not useful - behaviour in legislatures is responding to changes in society and technology. Nobody watches QP, people care less for decorum and don't revere institutions, if it's not Tweetable its not really going to gain traction, etc.
Is this a problem that requires "fixing legislatures", which ostensibly do still pass laws, or is it that we need some kind of memetic approach to discourse and compromise that works in a digital world. Is that even possible?
I'm not sure I believe the work done in committees in the 1960s was necessarily of a higher average quality, even if it was less boisterous.