While awful, politically I'd I were on Biden's team. I'd be pushing to cancel the debate.I've had to watch that a couple of times!
Totally laughable!
At least Bernie wants to make him earn the nomination...
There is no advantage for Biden in participating. Only Sanders can gain from it. So stall would be my strategy.
Sanders on the other hand shouy flip his campaign into more of a Pandemic response apparatus. Let the American people know he is now solely focused on defeating the Coronavirus scourge. Start putting out adds on what to do who to call etc and finishing with. I'm Senator Biden and I endorse this message.
Start fund raising for Organizations working on the response. And Start a Daily Information instructional. Something like what Dr. Campbell does. But for the U.S more specifically.
Within 2 weeks, he'd easily be the most trusted American on the Topic. And Frankly that move will give him so much credibility.
Anyway, will see.