I expect to see the main characters rush to be the first to get immunity. Looking at a long prison sentence will loosen any tongue. They may hate Donald Trump, but do the LOVE Hillary enough to go to prison for her?
Sadly I do not see any direct connection to Clinton/Obummer. Blind allegiance is not culpable upon those two. Now if someone is willing to hand an investigator a smoking gun it might earn them a get out of jail card.....?
Rosenstein signed off on at least one of those FISA renewals and his resignation should be asked for by the president IMO. Comey should be indicted at the earliest possible moment if they can show he knew of the political connections since he has already testified to Congress that the dossier was salacious and unverified at late as June 2017. Comey signed the first three FISA petitions knowing full well that the information used to obtain them was unverified.