Either I'm old or I've just watched and read too much, but I swear, I can predict just about any TV show. Maybe it's the hints. They seem so obvious to me most of the time, a trail of breadcrumbs for viewers to go back to and say "Oh, and this and this-- it all fits together!" But I swear I usually see it all coming ahead of time. Are we supposed to? At least to some degree? Do you?
There are a few that are written so well that I can't predict what happens next, yet I don't feel that the events come out of left field either, and I go back to those breadcrumbs and say, "yeah, right, okay they *did* set this up." And there are always those that do come out of nowhere, and I usually stop watching those. You have to give me some honesty in the character and story-- they can't act out suddenly contrary to the circumstances and their own beliefs, things you've written up to this point.
Maybe that's why I liked Buffy so much. Even though I knew who would live or die, the "monster of the week" way it was written kept me guessing, and who in the world knew that Buffy was "The Gift" or that it was all set up episodes ago? Or that Buffy would actually have to kill Angel, the real-for-real Angel just as he was healed in Season 2?
Oh, Joss. Come back to TV and do something great. I miss you. I miss not knowing what's coming and that delicious moment when it all comes together.