On the contrary, TOGS -- I think in some ways the character work in Fringe is superior to Lost. I actually care about the characters in Fringe more than the high concept sci-fi, whereas Lost always prioritised mystery (no matter what the creators ever said or intended, the show itself was more about the mysteries than the characters).

THIS POST HAS UP-TO-DATE SPOILERS I GUESS.

I've liked this season a lot, although it makes me afraid for the future, story-wise.

There are two options at this point: (1) We are in a new universe, the "Amberverse", created by the big fuck you space and time machine, and Peter is simply out of place, and must go home to the Blue universe; and (2) We are still in the Blue universe, just in an amended timeline, but the Olivia we've been watching this season has been Ourlivia, not Fauxlivia (or "Amberlivia"). Both are... troublesome.

(1) If Peter simply "goes home", what happens to the Olivia, Walter, Astrid, Nina and Lincoln we all know? Do they cease to exist? Do all the adventures they've had in season 4 just not matter any more? Nothing like the feeling of "nothing you just watched actually happened or matters" to sour a viewing experience.

(2) If we are still in the Blue universe, what happens when the "prime" timeline is restored? Will the above characters be folded together with their new-timeline identities; meaning Olivia was both raised and not raised by Nina (etc) -- much like she is now? That means that these characters will all have fake memories in their heads like hers, or have the old memories overwritten, which is problematic, identity-wise, but doesn't sour the viewer as much as option (1).