Still going on about this absurd fantasy eh? Obama won't want his entire legacy annihilated by the biggest self inflicted gunshot wound in the history of politics. And even if Biden was willing to flush it all down the toilet for that move there is easily half a dozen Senate Dems up for reelection in red states ,that know they might as well pack their bags if they go along with it , This move is tantamount to political suicide ,so they wouldn't get the votes needed even with this trickery. It's not happening, Trump will pick Scalia's replacement preserving the current status quo. Democrats just have to hope that Ginsburg and Breyer can hold out.
Only political suicide if the Dem base continues to act like special snowflakes who are more interested in ideological stands that look good, than actual change. "We're better than the Republicans and don't play dirty" loses against people who back a sexual assaulting racist, because he's their party nominee.
(Which is a long-winded way of saying "Yup, political suicide")