In my dreams, I see a finale where Marcus Pike, sitting next to Lisbon in the plane, will start to make the RJ voice "too bad our dear mister Jane didn't see again the obvious right in front of his nose" and then Lisbon starts to freak out...
At the same time, we see, as in the trailer, Jane running to get the plane, but he's too late, and woosh, cliffhanger for season finale.

You see, I imagine as Heller said, that the "original" ending would be, as it was planned to be a season and series finale, Jane catching the plane and confessing his true love for Lisbon and finally they kiss, etc...

But now that the show is renewed?? Maybe they shot another ending, a darker ending, with He is Mar-cus Pike...

I know this won't happen, really, I won't even bother to watch the episode, but I don't know, it's just that stupid little hope...