8. Push Caitlin A Little Closer To Becoming Killer Frost
It still feels like Caitlin has a long way to go before she would ever end up like her Earth-2 counterpart. Even after losing Ronnie and being betrayed by Jay, she seems to be managing, so its hard to think of what would fully send her over the edge. That said, the gradual arc of her character being corrupted is absolutely one the show should be exploring. Her comic book origins are simply too juicy to ignore and the results could be incredible. People responded so well to Slade Wilson as a villain in Arrow because of the deep emotional connection he had to Oliver. We saw him as a hero first before seeing how he was driven to become a villain. While Caitlin may never become a big bad on the level of Deathstroke, the emergence of a darker, colder side of her would contrast nicely with the generally more light-hearted and upbeat nature of the people surrounding her.