If what we think of his ties to Russia is true, and I believe it is, surely a guy like Flynn making a deal with the FBI should be the beginning of the end of the Donald, right? Basically a textbook example of how to bring down a criminal organization: get to the lower guys, get dirt on them, get them to feel wronged by the big guys, and then have them turn on the bosses. Repeat this until you have enough dirt on the boss and bring him down.
Obviously this could still take a lot of time. But if the FBI has someone like Flynn working against Trump already, I would think it likely he doesn't survive his first term.
Or am I too optimistic here?