I am loving this last few episodes... although it almost feel like they are trying to wrap up. The main story is almost complete, they revealed almost everything Who are the observeres, what's their porpose, Peter knows that he is in the right universe, he is back with Olivia. There is truce between the two universes and they both understand and recognize shape shifters as their main enemy. We almost know who all were "typing" from the two sides. Only thing that remains is the capture and defeat the shape shifters and the German dude David Robert Jones... it will be the end game, the one that they have been preparing for. I hope Walter regains his intelligence for that war!!!
Seems like they are going to end this season...