For brainstorming and presentation it would be useful to display only the names of class attributes. This would be via a setting at the diagram level, and would eliminate all other adornments, including the visibility, type, and value. Most importantly, even the punctuation would be gone; the colon would not appear at the end of the attribute name.
This would only relate to what is displayed on a diagram. The attributes themselves could be fully populated, with datatypes, initial values, or whatever.
This display option would be helpful for brainstorming, presentations and non-technical documentation, or any other high-level diagrams.
David