As fun as this episode was, shoehorning yet ANOTHER godammed spinoff universe into the series so close to the season finale feels like a squandering of time. It didn't reveal enough about the characters (though oddly Walter was way more interesting with his restored brain) to warrant the trip, and making the Observers evil was just fricking annoying. As much as I'd like to see where this goes, I feel like they are just opening more doors to screw with us, and it's starting to get a bit tired.