Mitch McConnell is at a turning point in what's left of his political career.
A) He can follow Trump lock-step, insist on repeal and replace with...uh...well I guess he could try to force the issue with TrumpCare 3: the Trumpening, but everything I've seen suggest even he doesn't think it'll pass. Multiple GOP senators have been saying "no, it hurts too many people" and 52 is a
fucking dangerous number for them to deal with (get it? I'm clever!)
OR.
B) He could actually work with Democrats to either make something 100% new, or failing that stabilize
the already stable markets, and make something both sides can agree on. But this will be seen as heresy by the far right and Trump who are not the same but somehow agree on killing old people for money.
Based purely on the information we have so far:
A) This route seems likely to fail. This leave the GOP with nothing, then August they don't work, then September they have a budget to pass which must happen before TrumpCare 4: Trumpsters on Ice is planned behind locked doors with no women, doctors, or people with souls involved. Worse, their lack of progress will embolden the Democrats, who will kick them in the wallet while they're down, and force them to cave on a few key issues during the budget process, leading to either a weakened form of B below or a government shutdown. With nobody to blame for a string of dismal failures but themselves, the GOP loses a pile of seats in 2018 and the implosion of the party commences in earnest. McConnell will not retain his leadership role, and might not even return to Washington. He might resign in disgrace.
B) Moderates get to return to their voters and not get booed the fuck out of their town halls and likely re-elected, but the hard right will be out for fucking blood. A power struggle in the GOP will ensue, with McConnell's seat in jeopardy. Assuming he keeps it -- possibly by managing to win other points on other issues -- the far right likely goes full Tea Party and splits, saving the GOP from itself but costing them market share in the process. If this happens, McConnell will likely retain his job, and the GOP might even retain their majority role, but the attacks by Trump will be nonstop.
I admit, it is possible they can somehow salvage what they have with a few tweaks and squeak by with 50 1/2 votes. But the current evidence is against that, and I don't see that happening until later in the fall regardless.
This is what seven years of being the Party of No gets you. Maybe they should have been the Party of Try This Instead?