Do you really think Mitch McConnell or the Congressional Republicans give a crap about people on Medicaid?
I don't, but their problem is Trump. He's not going to stick his neck out for Congressional knuckledraggers. He's already throwing them under a bus and he's not even in office yet. Trump will loudly declare he's ready to sign an ACA repeal TOMORROW!!! as long as everyone keeps their health coverage. Simple, succinct, and keeps him as the defender of the working class slob, while simultaneously screwing the Congresscritters. If they could pass a replacement that keeps everyone's insurance, they would have done so already.
IMHO Trump has two things that he cares about, and the rest was just rhetoric to get elected. 1) Tax cuts for the rich, 2) Build a wall. Jailing opponents, cancelling free trade agreements, repealing ACa, deporting everybody, rounding up Muslims, etc etc - not sure he actually cares about any of that.