I’m a long way from the liberal wing of the Democratic Party. I would strongly oppose an intentional move to the left, just as I invariably support moderate candidates in the party primaries (and indeed, I even vote for moderate Republicans on occasion, when the Democrat is too far to the left for my tastes). RTF, on the other hand, described himself as pretty liberal, which means that I would probably oppose the details of his positions on a lot of policies.
Nevertheless, he and I appear to be in complete agreement in this thread because what we are both arguing is that that Democratic Party needs to define itself and present its prinicples in a way that is understandable to the public. Those principles can and should embrace the party all (or nearly all) the way across its spectrum. Those are the principles that make us Democrats, and it is those principles that separate us from the Republicans. Our discussion is about defining the party and identifying those principles, not about deciding whether to move left or right.