What would the intelligence community’s ‘insurance policy’ against Trump look like?

Let’s begin in the realm of the fanciful.

Assume, for the sake of argument, that powerful, connected people in the intelligence community and in politics worried that a wildcard Trump presidency, unlike another Clinton or Bush, might expose a decade-plus of questionable practices. Disrupt long-established money channels. Reveal secret machinations that could arguably land some people in prison.