You must have hated 24, then.
They've killed off 2 out of 11 main characters: for network television, that's pretty substantial!
And Jarvis has "I'm going to go out in one glorious sacrifice to stop Sophia now that I've learned the error of my ways" written all over him. I could also see Sophia or Simon making a heroic sacrifice for their respective sides in the final showdown. They've gone with all the "is she good/bad" on Christina to off her, ditto with Martinez being dead and now alive. Sean has Heroic Death Exemption written all over him, and it rubs off on Leila by osmosis. And Sterling is the most interesting character on the show: I don't want him to die!
This is all speculation, not spoilers, of course...