The obvious answer for "what to do about Trump:"
Support him.
1. Admit you wre wrong during the 2016 primaries, which he won.
2. Admit you were wrong over the 2016 general, which he won.
3. Admit you were wrong over how he would govern.
4. Admit he is polling BETTER, than Reagan, B. Clinton and Obama at tthis point during their first terms.
4. Admit that 80+ percent of Republicans/conservatives support the duly elected Republican President.
5. Admit that alternatives like Weld are ridiculous, along with 3rd party efforts that only serve to fail.
Remember John Anderson in 1980? At the end of his career, he supported Nader.
I support Trump when he is right.
As for your little list,
1: He may have won, but I wasn't wrong.
2: I didn't want Hillary to win, that wasn't wrong. I figured Trump would, so handily in my state, that I voted for someone and a Party I could support. Trump got the electoral votes without my help, which he didn't need.
How was I wrong about that?
3: While the jury is still out on that, I have seen my tax deductions go away, ones which are integral to my work. I have seen no wall, the ACA is still largely in effect, and Hillary is at large.
There have been a couple of good things rapidly followed by an administrative assault on the RKBA, more alcohol in fuels, and mobs of judges and lawyers stymieing this administration at every turn, including the GOP. IOW, the swamp is perfectly safe at least for the moment.
I wasn't wrong, I didn't expect much, and I haven't been the least disappointed.
4: The only polls which mean jack are the ones on election day. The rest can be gimmicked a thousand ways from Sunday.
5: 80%? Well, what else are 'Pubbies and Conservatives going to do? Is there an alternative at this point? What disingenuous nonsense.
6: Lest you forget the "GOP" wasn't a major Party at one time, either. Harping on the old saw that you vote D or R or "waste your vote" has been a hugely effective mantra, admittedly, but that can change. As the Major parties coalesce into a group of self-serving globalist totalitarians and it becomes obvious to the rank and file (if we can pry them away from the bread and circuses), perhaps that will change. Either that, or the Republic will be lost, the Constitution a historical footnote, if it is even mentioned, and the economic collapse from making money out of thin air and servicing that debt will be the end of it.
(Why are we borrowing money from bankers when we could simply have monetized the debt through the use of United States Notes, without owing third parties interest?) Better yet, why are spending so much of the legacy of hardworking people and their descendants on things which at best kick the can down the road, and on people who will not fix their problems so long as they are subsidized for having them?