That is what Trump is going to do. He is going to force the politicians to actually do all the things they say.
I wouldn't get your hopes up. Trump has already said they'll probably just get rid of the parts of Obamacare they don't like and keep the ones they do. That wall is never getting built just because of the engineering issues and costs involved. He's not deporting all the undocumented people for the same reason they haven't already been deported, the sheer scale and cost of doing so prevents it from happening. Thing is, his supporters take him seriously, but not literally. They expect him to do something about Obamacare, immigration, illegals, etc, but not exactly what he said he'd do. I see no reason that he would actually try and get the Republicans to hold to their promises any better than he does his own, nor do I think he has enough power with the bully pulpit to make them.