Trump wins bigly in 2020. What then?

Just a thought experiment, I hope.
Assume:
Trump has a solid win in both the EC and popular vote.
Republicans get to 60 Senators.
Republicans retake the House.
Republicans increase their control of governorships and state legislatures.

What happens?
Constitutional amendment to remove presidential term limits?
Selling off the National Parks?
Declaring war on Ukraine?
Ok, maybe those are ridiculous. Or not. What do you think might happen?

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