If Eric Kripke had stayed the whole Fifteen years?

So here is a question for you guys.

Many of you feel that the first five years are truly the best definitive years of Supernatural. So if Eric Kripke had continued on for ALL of the fifteen years as Show-Runner, do you feel that his vision would have still been as strong? We had four show-runners in this stint and they all bought something very different, and they all had their own collective visions that they bought to the table.

So how do you think Eric would have coped had his story telling lasted fifteen years. Would it have been as strong as those first five? Would his arc's been as out there, and fresh as say Andrew Dabb's in later seasons? Would he have done it any differently? Eric mentioned that his final ever episode would have been much more gory and blood thirsty and we might not have liked it as much. Fifteen years looking back is a long time, and a long time to put any descent content into it. So with that thought in mind, would you have loved Eric to have stayed the whole hog?