I don't have a lot of love for Wolves Den because of how repetitive it is, but I agree completely that there should be a lvl 60 version of it. That said, even if they did bump it up to 60, there is no way in hell that it should be ranked. SE has already proven that they have no idea how to properly manage a ranking system in PvP. It would be redundant to try it again, especially in something as mindless as Wolves Den.