Jag's just a jerk, but back to the OP.
I've never been fully on board with harris, and I think Rice would be a disaster politically. She's the gop punching bag, and Obama did send her out to lie about Benghazi …. possibly without her knowledge. But she's radioactive, imo.
I've read that Analog Joe is concerned that his VP has to be up to speed on for policy, but imo domestic policy is by far the most important thing that a potus has to be prepared for, and have a shit detector for for policy guys with agendas. Imo Lance-Bottoms has a nice way of speaking and presenting issues. And god knows biden's gonna need a surrogate who can explain stuff.
Susan Rice is only one whose character was assassinated on Benghazi. The claims by Republican Pols and hacks do a disservice to the public with their BIG LIES, not only on Benghazi - BIG LIES are a strategy used by dishonest supporters of the GOP and echoed by supporters of Trump ad nausea.
The only people who know why the murder of the Ambassador and three others at the Benghazi Counsel / Mission are those who carried out the attack. The claims that Sect. Clinton and President Obama were culpable for these murders is disgusting and after millions of dollars had been spent, and the Republican Members of Congress used hours in the Witch Hunt Sect. Clinton testified in a committee hearing they - much to their disappointed - came up with nothing.
That said, Susan Rice would be an ideal VP, and President if that were to occur. Herein is her response to the Benghazi event: