Economics: Trump will repeat the Bush tax cuts and deregulation, with similar but worse results. Odds of a financial bubble and crash are 92%. Odds of a Great Depression are 75%.
Foreign policy: Easily offended, Trump will alienate all democracies, embrace dictators, and start multiple wars. He will allow if not encourage Russian recapture of its former satellites. Trump will likely carpet bomb several middle eastern nations. Odds that he will nuke someone are 40%. Odds of multiple new wars 98%.
Domestic: carpet bombing and brutality will result in dozens of terrorist attacks by newly minted jihadists. Some will enter as refugees, most not. Domestic right wing acts of terrorism, attacks on minorities, takeovers of public lands by Bundy types will skyrocket.
immigration: no wall, a lot of bluster and token deportations. Too many powerful Zrepublicans make billions exploiting illegals for any action.
infrastructure: it is very likely that Trump will get a massive public works bill passed, making the deficit skyrocket. In return, a Trump will support Paul Ryan in gutting Medicare. SS is also in large danger.
Roe vs Wade: no action except to defund PP. Abortion keeps Republican voters in line. They will never do anything to take away that carrot.
Legalized discrimination by right wing Christians: 5 percent. Even with more conservatives on SCOTUS, they will not choose to completely gut 1A.
Veterans: Trump will be a strong advocate, especially for the tens of thousand of new injured vets he creates.
Environment: back to burning rivers, unregulated pollution. Species extinction rates will skyrocket.
Education: science will be marginalized, we will fall decades behind the rest of the world in math and science. Logical and deductive thinking will be eliminated as much as possible.
Corruption: Trump will far surpass Nixon in the size of his Enemies List. He will find cooperative minions in theJustice Department, IRS, and others, to punish them. This may lead to talks of impeachment. His myriad insider deals will be ignored as he enriches himself.
Martial law: should he be seriously threatened by legal prosecution, he will use the domestic terrorist attacks to declare martial law, muzzle the press, and jail his opponents. Odds are fifty percent.
End of martial law? Twenty percent. Shift from that to dictatorship sixty percent.
We will have an interesting ride!