Keep in mind this would be for a first run or two, not a convention of publishing dungeon maps.
I think it might benefit from these features:
- Room shapes that can be described in a word or two (i.e. square, semi-circle)
- A way to talk about Room sizes that are consistent and agreed upon. I like Delta's suggestions here. (These could even be color-coded on the map)
- Corridors that follow a grid and have only 90 degree, or a few 45 degree turns.
- A simplified layout without complicated intersections or corridors with doors all over the place.
- An agreement on giving distance to doors and corridors in a standard way (I chose to their edges).
- Distances marked on the map between features to speed up communication.
- Maybe a reference map with descriptions written out so new (and young) DMs could see how grognards describe complicated intersections and door placement.
Anyway here is a draft of what my map might look like:
I have a rougher draft of a second level that makes map features slightly more complicated, but I didn't quite finish it. (Work was a bear today).
The scale is 1 square = 10'. So the DM might say:
"You enter a hallway that is ten foot wide. Fifty feet ahead, you see an opening on the right. The hallway continues twenty feet past the opening before ending in a left turn." etc.
Let me know what you think, or any suggestions you might have.