Does Your Dungeon Pass the Whiteboard Test?
Most folks seem to "need a lot more practice."
I know, I know, I can already hear the grognards grumbling that "D&D isn't like a video game!" But if I'm honest I have to admit that I find dungeons that look like the one in the intermediate example to be dull to run and a chore to explore as a player.
Either way, I think this is worth thinking about.