You make some good points.
Hillary Clinton has done a good job of distancing herself from Obama these past three years.
The biggest risk the DEMs face from shifting abruptly from Obama to Clinton is the loss of the black vote...which might explain why Obama has been spending a lot of money on political ads aimed at black voters.
One, Hillary knows she would lose BIG.
Two, the Dems know they will lose BIG regardless of who the candidate is.
Three, if Obluder isn't complicit, he's damaged goods, and nothing will save him.
Expect the stonewalling by the Senate to break and we get talks on Budget, Immigration, all the things Dingy has gridlocked to protect Oblunder.
That will be the indicator that the Dems are done with him.