Look, putting aside all the talk about players and skill levels and ilevel, Square has their own internal play testers that they set loose on new content, like dungeons, and it's from these test runs that they figure what the minimum ilevel should be. If these testers feel iL55 is what the dungeon should be, then iL55 it is. It would have to be one of the worst players to fail so hard in an iL55 gearset that the run couldn't be completed. I've seen people that bad, and it was not because of their gear (how can someone be so bad when they have a Faerie Bow?... seriously, recent Pharos run, complete moron of a bard).