Pretty much nil. The NSA isn't stupid; even in the (exceptionally unlikely) case that they can just MITM any SSL connection without arousing suspicion in even a

Pretty much nil. The NSA isn't stupid; even in the (exceptionally unlikely) case that they can just MITM any SSL connection without arousing suspicion in even a well-monitored network, why would they reveal that? Much easier to just hack your computer/telephone/...