Dems haven't figured out what their plan will be in response to GOP control of the legislative agenda and their ability to pass and get bills signed. A lot of bills will probably roll through Congress next year, and it's unclear that the Dems will be able to stop any of them.
Maybe, finally, the Dems will start talking about what should be fixed. They may talk about the downside of the current situation, and how it could get even worse with the GOP plan. My feeling is that the Dems were always too confident in the status quo. There was too much happy talk about Obamacare, and not enough concern about its costs and how to rein them in. There was too much happy talk about the job market improving under Dems, with no strong plan of how.
It's true that the GOP stymied the Dems completely. They couldn't have reformed any part of government if they had wanted to. But the Dems still could have shown the ideas and willingness to try. However, they didn't. They wanted the same path, starting at the status quo and adding more Dem-like programs and spending.
It seems like that plan has been a loser, and now the loss is almost as complete as possible. Will the Dems learn? No signs of it yet.
Extra. What Trumps says he'll do in his first 100 days. I should revisit this and make my reality-based guess of what will happen.