Though Hillary was never aware of it.
Hillary takes all the mud of the primary.
Democrats become the underdog
Here comes squeaky clean Joe to save the day.
Warren attracts the Sanders vote.
Good analysis. This plan avoids the inevitable, embarrassing pitfalls that would have surely ensnared Biden during the primaries. He is a walking gaffe machine. Also, he’s too old to endure the rigors of a long primary campaign. The plan saves him from all that and, as you say, allows him to come in as the White Knight to save the day. Obama has all along kept Old Joe squeaky clean just for this eventuality. Biden never did anything over the past eight years so he has no tracks to cover. How convenient for him and Obama.
Sure, Hillary is the mark in all this but in the end her payoff takes the form of her seriously problematic legal issues being washed away. Obama is in complete control of that situation as well as the timing of any necessary “remedial” actions to let Hillary walk free.