I'll throw an unpopular opinion in here: For me as a casual player, the leveling dungeons were hard, but doable; But I did one level 100 dungeon and it was a frustrating wipe-fest, so the high level dungeons are one more thing I won't do anymore in this game.

I'm not against hard content, but it should always be optional. I for one was perfectly happy with the difficulty of the EW-dungeons, for me that difficulty does not need to be any higher. Therefore I'd say give the players who want a big challenge an "expert"-version of the dungeons and us filthy casuals an easier one, so we can enjoy the content too.