I would like the Jo negotiating part better if it seemed realistic. Without knowing details on board exams (as quoted above, thanks!), I knew it doesn't make sense. "Fellowship" is not just "wing it." My sister went that route; it's part of training. If they had done a better job over the years of making Jo seem like a real, competent, independently-practicing doctor, it would make more sense. As written, it comes across as "you hang around and boom just become an attending" as if that is realistic.