The problem is that the slavery/trafficking storyline was announced too early, like Carla's mental health crisis, so I think we've just got fed up waiting for it. It's certainly a relevant issue, sadly, but I was sort of hoping that Seb could just get a normal teenage storyline and fall in love with a nice character who was just trying to make a better life for herself. And I'm still hoping that Jan is going to come to his senses about his "business" (or perhaps he already has, and is helping to bring the gang down?) rather than turning out to be another baddie.