Trump is starting to see the light. He tweeted that they should just repeal and worry about replace later. If you do this you could possibly get some democrats on board. That should have been plan a.
Not how I see it at all.
From a deal making perspective that tweet is kind of a disaster. Before it was a meeting to get common ground from the moderate and extreme ends of the party. Now he's laid bare the intent that if the extreme end just says no they get exactly what they want, full repeal.
Full repeal with a plan to put "something" in place in a year is a guarantee that the exchanges completely collapse, the current uncertainty has already eroded some of it a future repeal will destroy them.
It also gives 100% of the power to the extreme end of the party in negotiating. The worst that happens as far as they are concerned is ACA goes away forever. They lose their long term cuts to medicaid via block grants and tying it to regular inflation instead of medical but they will get so much that is marginal.
Maybe it could lead to Reps reaching across to Dems in order to shut out the extreme ends of the parties but that seems highly unlikely. They could technically do that now and some moderate Dems might go along under the fact that it is better to negotiate the future of the ACA than it is to wait for Reps to give in the their extreme end but so far the Reps have let bills die instead of even entertaining the thought of bipartisan support.