Nothing done here will matter, except as a weird experience for Peter. No other character is actually getting development or experiencing anything...because the real characters no longer exist. If they get Peter back to the original timelines - Reset Button! If they permanently keep this new timeline - Reset Button! Either way, the whole season becomes a huge waste of time. JJ, I thought you might have learned your lesson with Alias
's shitty mid-seasons, but I guess not. Dude, stop planning 5 year shows with stupid reset button time twists 2/3 of the way through. The remainder of the show then becomes about trying to undo the stupidity or spinning further into insanity, when you had a good thing going there for a while.
I want real Olivia and Walter back, now, dammit!