I think there's an extremely strong possibility of Cena dropping the title to either Sheamus or Kofi with the seeming direction they're headed in. I don't know if it will happen as early as TLC, but no too far into the future.
I'm calling for Kofi to win the Rumble this year, so we'll see what happens.
But as I said, Cena not having to take the pin is very promising.
And don't forget we're assuming they're going with Cena/Undertaker for Mania this year. I don't think either of them will be going in with a title.