Fifty bajillion wormholes in the episode, plus the return of Beverly Barlow, and they couldn't even be bothered to either address the fact that we've abandoned not only one, but two, timelines, and we've never found out much at all about The Consortium. And really, would it have killed them to have Nathan Stark make an appearance?!
I haven't been this annoyed since Stargate SG1 ended without ever finding anything out about the Furlings.
Re: Also, I am highly displeased with the Eureka finale. Spoilers inside.
AND I'm pissed that we never got to explore Old Kevin, and the role he may or may not have played in creating the alternate timeline.
And don't even get me started on them never addressing what, if any, part Old Kevin played in the change to the timeline.