I can understand that prosecution is going to take a very long time. But I cannot understand why they have not yet released the FISA docs or at even the Congressional testimony transcripts. They bad guys already know what's in there, they know that the good guys know, and they know that it's slated for release. There is no tactical advantage to keeping it secret from the public.
It makes sense to wait until Mueller is finished with the active investigative phase of his operation. We don't want to give the other side ammo to claim that Trump is trying to interfere.
But they don't need to wait until he finishes his report. He can drag his feet indefinitely. And the Dems will defend him as he does.
But Mueller is just about finished with the first phase now and has begun writing his report. I say, fire the torpedoes!