Spoiler Below I don't see how they had to keep Sylar alive... at all. I mean, if you're talking about talking to the president about all this, you had MATT PARKMAN WHO CAN CONVINCE PEOPLE TO DO THINGS telling Sylar to be Nathan. HE COULD JUST CONVINCE GOVERNMENT AGENTS TO LET HIM TALK TO THE PRESIDENT. Though of course, with Sylar's "new spot", they wouldn't know where to put whatever used to kill him, but damn it, letting him go freely and walk around (we already know that he's capable of overcoming other peoples' powers, so i don't see how Matt's mind control would be very different) is just stupid. Overall good season, overall terrible finale.