People have a tendency towards "visionary" politicians, who arrive with agendas and strive to make them reality. Politicians who "flip flop" are derided, because changing your position is a sign that you never had real ideals.
But I think we have this backwards—in a representative democracy, the job of a politician is to represent the electorate! The ideal politician, then, would be an empty vessel, who was willing to move to wherever the people are.
And that's exactly who Biden is. He's always been a centrist democrat, but his "center" moves alongside his party. Biden also believes that governing is fundamentally about building coalitions, not smothering the other side.
I am worried that Republicans may simply be unwilling to make any deals, no matter how hard Biden tries or what compromises he's willing to make. But, if anyone can do it—and that's a very, very big "if"—then Biden probably can.