User blog comment:TB93/Ramiel ruling Hell/@comment-5619706-20170227175228

Hard to tell. For one thing, if Crowley acts an advisor, I'd wager the Purgatory arc would still happen if Ramiel agreed to use the souls there to boost Hell's power. Difference being, Castiel would not be included in the plot since Ramiel seems powerful enough to pull it off. Which means Castiel loses to Raphael, and Hell going toe to toe against Eve (still a tough call since Eve remains more powerful and older than any demon), and the Leviathans would be unleashed regardless. It sounds more chaotic than what happened in Season 6.