I walked into that one. And as for the difficulty of it, it's the feeling I get from what I have read on the boards. If I'm wrong, it's all the better for me.
And sadly, we're not making any headway on me understanding why it's so difficult lol. I really don't see a dungeon's size as being an issue.
Anyways, good luck finding a GM to run WLD by PbP for you. If you can't find somebody you might be able to slip into the PbP I'm running online instead.