If you run THIS 2016-esque campaign with a different face? You'll still lose. Bougie liberal powerbrokers have a REAL DAMN hard time admitting that the wonky technocrat shit that means a lot to them isn't super relevant in the electorate. They also have a real hard time ditching their own baggage because it means you admit to mistakes; which isn't something they do well.
You can't just be "Biden but I can talk normal." You need to reject his DEEPLY UNPOPULAR presidency. Will they? No damn clue