IMO Hillary would be much more effective in getting things through Congress than even Obama.
She has likely compromised 2/3 of the GOP Caucus through the Clinton Foundation.
She would easily be able to bribe others into getting on board.
We know a whole lot of Republicans in Congress agree with her anyway. Paul Ryan certainly does.
Republicans would see that by stacking the SCOTUS, legalizing immigrants and forcing Section 8 to the suburbs, they were being consigned to permanent minority status. So they would decide to play ball like good little puppies in order to protect their prestige and their pensions.
You are correct. People on our side had better get realistic about the situation.