Reagan didn't face a $20T debt either. That gives us a stronger incentive to do the right thing. Then it was mostly about freedom, but there is now an economic urgency too.
With 50% and 58% percent of the vote Reagan wasn't able to get rid of any government departments and even added the Department of Veterans' Affairs (basically a rebranding of the Bureau of Veterans' Affairs, but still making it a full department was an indication of how things were going).
No Republican is going to get 58% of the vote this time, so even if a Republican gets elected there will be limits to what he can do.
I guess it's possible that a major crisis will produce an opportunity for major changes, but I don't think we're at that point yet.