Backstories

So I’ve been thinking about this a lot. Season 1 started with a backstory for every episode except the finale. We can assume from the first episode of season 2 they plan to continue this and due to the fact most of the main cast has already been given one I’m wondering how they’ll keep this up without running out of people? Obviously Lexie will most likely get one, along with Gia. Maybe the new characters Elliot and Faye too. That would make 5 character total, meaning there are 2 more characters eligible. Cal? The drug dealer lady? Ali? What do y’all think?