Don’t forget those 1100 raw data files on her and Bill’s adversaries.
Having the FBI files allowed them to blackmail Republicans.
Back in 2000, when the story of George W. Bush's DUI incident from 24 years earlier suddenly surfaced and became the top media obsession the last weekend before the election, someone on FR plausibly suggested that the Democrats learned about it because of the FBI files. It was such an old incident that apparently you couldn't have learned about it by going to the local courthouse in Maine, but it could well have been included in the FBI file for George H. W. Bush (since it involved an immediate relative) and Hillary could have passed it along to be used when it could do the most harm.