I like the analogy. These shows are definitely not thought through as pieces of artistic genius, with grand masterplans behind them. That's not how American shows tend to work beyond the first couple of seasons, though it doesn't make them worse. They listen to feedback, they roll with punches, they alter. So, if you kinda like spinach, but don't want it to be quite as bitter, if you feed that back enough, the taste of spinach may well change, you know?