It’s probably worth noting that Goodner’s initial pick several years ago was a Warren-Sanders ticket. You don’t suppose he had gotten their genders confused?
I don’t respect either terribly, for what-all that might be worth.
Both have caved into the Clinton camp in '16. Why not regard that as revealing? Sanders took longer to do so, and he did so a bit less completely. He has in some cases mounted anti-war efforts, whereas it is not clear whether or how foreign policy really appears in Warren’s radar.
Sanders is a deeply flawed candidate, but that does not make for automatic disqualification. I voted for Jill Stein for several elections running, and I might again in 2020. But the DNC is hardly apt to appoint anyone anywhere near so respectable, and I might be moved to vote for a compromise candidate. For all my impatience with the usual “anything blue” nonsense, there really is a fairly wide range of people I would prefer to Donald Trump, probably starting with my local librarian or 8 of the first 10 names in any local phone book.
If the Democratic party, including its rank and file voters, are looking for a candidate that some of us to their left might swing for, Sanders is the better choice, partly because he is more popular because of his '16 run, but also partly because his admittedly checkered record has some occasions when he rose against war, and partly because he has been willing to go mano a mano with politicians within the party on at least some occasions, though clearly not always when it was called for.