All of the other characters' stories mattered at the time. But like all problems, once they are resolved, they don't matter anymore. But not all problems were equal:
- Chad was an issue until he wasn't.
- Tybalt was only ever just a speed bump.
- Bella's story hasn't unfolded yet, I still think we're in for something unsettling with her.
The fact that they were mostly resolved without too much misery is a good thing. We don't need the issues to be so great that they scar the characters for life, at least not yet. We're still supposed to be enjoying the story.
But at the same time, if Zoey turns up and she's just got more problems for the mc to solve, that will be annoying. Her advantage will be there's gonna be an hour dedicated to her story, so by the end of it we may feel more inclined to accept her.