...and at the time, futures trading was -700 and then shut off. A predicted 700+ point drop is not 'significant'?
The markets do not like uncertainty, and Trump brings more uncertainty to the table than any President-elect in recent history. If he does incite trade wars (which his policies are pretty likely to do) and he does "restructure" US debt by some form of default on US Treasuries, it may make 2007 look like a 'small correction'.
Our housing markets cannot handle high-single-digit interest rates, and that's where we could go if people stop buying T-bills at low rates. If you do not have a fixed rate mortgage today, I'd get one soon.