Morning, Bo.
Joe has three strikes IMO - Handsy Joe, as you noted, his role in the SJC in rejecting Anita Hill's story, and his age (octogenarian at end of term is okay for veep, but a POTUS needs more youthful stamina and mental focus). Agree he's veep material. I like Booker atm, so with Joe that would be an Eastern Seaboard ticket....maybe a little more geographic spread would be better but maybe it's not that important. In some respects, Warren-Biden provides the better diversity, given the move towards glass ceiling breaking that accelerated in 2016. And her considerable skills as a policymaker.
Overall, I think he would need to do more public soul-searching regarding Anita Hill, if he wants women of color, and women generally, to get enthused.