I actually think that the very character trait that made Trump's rhetoric so un-pleasant during the campaign could lead him to be a less dangerous POTUS that you'd think.
Yes he is a power hungry narcissist, this made him say what he needed to to scared white folks to get them to vote for him. Including, bizarrely 52% of white women who voted.
but now he has to retain power. The adulation & applause will not be from the crowd anymore but from the corridors of power. These people will have a huge sway on the stupid and vain. There are West Wing staff who could intellectually box Trump whilst they do the crossword at the same time.
He lied to get in, now in he will be far less radical than we expect.
I can imagine a lot of Federal laws being devolved to States. This gets the heat off him.
This also puts the Senators in a much stronger position and protects him electorally.
A nation wide ban on abortion would cause mayhem. Devolve it. Abortion becomes legal in Colorado & Massachusetts, Illegal in Nebraska and South Carolina.
A Nation wide legalisation of Marijuana would be a disaster. It is already allowed in some states. Devolve it. Texas and Ohio can ban it. California and Washington (state) can legalise it.
Every one then likes Trump, as Trump allows states more freedom.
Plus, if you think your taxes are too high, don't call Trump! Call the Governor and protest the State House!