Rick Berman and the studio basically said to me, "Okay, this is the last season and whoever's watching the show in the seventh season are people who are already invested in the show and characters." They allowed me to take a more serialized approach in the final season. So we did storylines [...] And the quest to get home got played out in a more serialized way than it had been in previous seasons. The lack of serialization before wasn't really driven by the creative desires of the writers or the cast, but driven by the economic realities or at least the perceived economic realities of the long-term health of the show and the ability to show it in repeats and to foreign viewers.
[...] as I said, I wanted to make that last season as serialized as I possibly could, even within the framework of the stand-alone episodes.