The only somewhat encouraging thing to me in the IG report was that the FBI's lawyers refused to submit the FISA application initially because there wasn't enough meat to the suspicions about Carter Page. They reversed their decision only when the investigators decided to credulously include the allegations from the Steele dossier. The optimistic take on this would be that maybe it's a big black eye to your career if you get rejected by the FISC, so they're careful about what they take there.

Of course, it was an FBI lawyer who later doctored an email from the CIA to say Carter Page was not working with the CIA when the email actually said he was, allowing them to renew his surveillance two more times. But hopefully that guy goes to jail.