I'll say it again, my problem with the whole damn thing is that the Republicans were NOT, are NOT, will NOT be against raising the debt ceiling.
The bone of contention was for how long to raise the debt ceiling. GOP leadership wanted 18 months, the Dems dug in their heels and would agree to only 3 months. Since 60 votes are needed, the minority has effective veto power. Trump decided to take the 3 months, together with billions for the victims of Harvey. A quick victory at a time of true crisis, with another hurricane barreling in.
The Senate's rules give the minority - especially a united minority - inordinate power. Republican leadership is reluctant to change the rules because they take advantage of them to stymie Dem legislation when the Dems are in power.
Trump is beginning to realize the value of triangulation, of governing from the middle. On DACA, for example, a coalition of the center could, I think, quickly codify the program. Same goes with tax reform, but it won't be the pro-growth reform that conservatives demand.