With the Stargate SG-1 cancellation announcement, the decision by the writers and producers to use Wormhole Extreme in the 200th episode wasted an episode. Instead the episode should have been a pivotal point in the history of SG-1 and wrapping up the story lines.
Yes, fun and silly episodes are great, but only when there is time to play. If next season was the last this episode would be OK (not great but OK). Unless the writers and producers plan either not to wrap up the story lines or wrap them up hap-hazard, each episode now matters to the story line of this epic story and show.