While I Was Gone: Fringe ("Reciprocrity", "Concentrate and Ask Again", "Immortality")

I feel like, because that arc is over now, we've lost the momentum we had the first half of the season. The episodes have become more standalone (something which has only hurt the show in the past) and it's unclear where we're going from here. I don't know exactly how I feel about the whole 'Peter has to choose an Olivia and that will save a universe" device and I feel like I won't know until this arc is wrapped up. It is interesting considering one was his birthplace and one is where he currently is, so it's possible he doesn't have a bias in the matter. The standalone case in "Immortality" told a much better story than the one in "Concentrate and Ask Again" and I very much enjoyed "Reciprocrity", but it just feels like the pacing has taken a turn for the worse and I'm just waiting for it to pick up again.