I think what most Trump supporters hope for is a reduction in federal government over-reach. I myself would like to see the size of the federal government reduced by about 99%, mainly through closing most of the large government departments, such as the Department of Education, Department of Agriculture, the FDA, Fannie Mae and Freddie Mac, and many others.
Most of us would like to see the criminals in DC prosecuted (including but not limited to Hillary Clinton), along with the Wall Street and banking fraudsters--whom Eric Holder declined to pursue during his tenure as Attorney General.
We now have a reasonable expectation the Obamacare will be repealed, but many of us would like to see the health care and Big Pharma industries stripped of their immunity from antitrust legislation, and all government intrusion, monopoly, and subsidy removed from health care, with a return to a free-market system. And while he's at it, I'd like to see Trump do away with all government intrusion, monopoly, and subsidy in all areas of business and finance.
Many of us would like to see anti-trust suits against the mainstream media. (Six corporations control the MSM in the US--and probably all six of them are controlled by essentially the same people).
We'd like to see an end to illegal immigration, and the deportation of illegals, and an end to admitting Muslims--while preferably returning those who are already here to their place of origin--or, really, anywhere but here.
We hope for peaceful and mutually beneficial relations with Russia, which the current administration has been continuously trying to provoke into war. We would also like to see NAFTA repealed or at least renegotiated, and trade relations with China and other countries restructured in a manner consistent with US interests.
These are pretty tall orders, and many of them can't be accomplished in 4-8 years, but a start would be good.