From the spoilers and interviews I've read, I am pretty reassured that they WILL do the split personality thing, and that it IS Nathan's mind in there - not just a bunch of memories that Sylar is forced to believe. *crosses finger* Maybe that will let Nathan have a more proper sendoff. I think that it's still a bad move for them to end a finale that way though, especially because they didn't um...portray it like I think they intended. Maybe a midseason finale but pissing off your fans then making them wait four months? Way to kill your ratings.