I'm anti Warren. I'd even take Hillary for the sole fact under Clinton the economy did prosper and a few trade agreements created more global stability. Would love Michelle Obama. Huge twist. AMY K is probably best.
I'm anti-Warren too. But as I said earlier she has some skills that I wish others had.
I thought of Michelle. I think she's a good person but hard to justify her in that role. But I do think it's worth speculating as to whether or not (or how much) she would help or hurt the ticket.
A side question would be how much her and Barack will help (or hurt) Biden as highly visible surrogates.
The fact that Barrack helped us through a economic down turn, foreign policy issues addressed and helped through one plague already that didn't cripple the country is a boost. Also the view of Michelle will pull the woman's vote far more than Hillary or Warren. Women relate to Michelle. All women like to think they are the back bone of a strong man, Michelle for many is that. In Biden's case he puts them behind him, as in Michelle and and all Women make him a better man. It's a long shot but I'd do it.
I would go even further in that if she was willing to become VP, why wouldn't she just go all in and run for president. I think she would have beaten Biden, Bernie, Warren and whomever, as well as clobbered Trump.
I know it is pie in the sky, but she is probably the most popular woman in the country.