I think the Dems actually WANT McConnell to invoke the Reid Rule because then they can say to their base there was nothing they could do.
This. They are the most political of animals even if they are a bit tone-deaf. Trump has to show results - do that, and the rats may lose more power in the mid-term.
I also believe there is another part of the equation that the rats are not taking seriously - Trump loves to campaign and if he shows the results I believe we will see his targeting of vulnerable rats in the mid-term may be pretty effective in states he carried.
I made a recent post of the same idea. Trumps brand/endorsement or whatever you call it will truly be tested.
I believe he has the ability to swing elections with tweets!