Trump, if nominated and elected, will accomplish things, big things. That much is known about Trump's personality.
If you've ever been in a Trump building, they are models of efficiency. Everything from amenities and maintenance to lobby clean-up function like clockwork. And the reason they do is because Trump demands excellence.
I think Trump's legacy will include (in addition to getting the wall built) busting up the waste, fraud and corruption in government infrastructure projects, such as the $2 billion for ONE veterans administration hospital--Trump commented that in the real world--outside of government--he could built 5-6 hospitals for the same cost.
When it comes to construction projects, Trump KNOWS buildings.