I think Ben left because he had an opportunity to work with a show with a bigger budget, and maybe he didn't care for where SPN was going to go, I don't begrudge Ben the opportunity, cos we all want new challenges. But the showrunning from Carver has sucked, I really do think the issue has been everyone on show is working on their Tribes spin-off, and they think Spn can just run on fumes. Jenny Klein used to be Eric Kripke's assistant and wrote a few SPN books, Bob Singer's wife writes for the show, show doesn't seem to want to spend money on good writers.

Jenny wrote a few eps, and they were all tissue-thin and riffs from previous eps, her last ep was the roman goddess Vesta an incongruous and offensive (for the woman) scene between Dean and the ex-porn star,