I'm not sure I completely agree here. The Democrats has a rich tradition of doing things for the benefit of all Americans. I'm not sure these are being touted in as much as congratulatory as trying to return to the base principles that we stand for.
20 somethings need to understand their history as well. They have to understand that everything that has happened has a history and a reason for its happening. Also, many of the concepts being pushed today - like the healthcare discussion - really have roots that go back to other issues in the Democratic Party's past. We are the party of reform. The GOP is just better recently at selling themselves as such.
New ideas are great and should be listened to and acted upon. But these new ideas have to fitwithin the overall framework of what Democrats are and what they have always stood for. This build the brand and shows a consistency over time of what being a Democrat means. When we abandon our heritage we weaken ourselves as a party.