At least they are sensitive enough not to list the person's weight! We would not want to offend anyone.
The two party system would love to have REAL ID list political preference and be required for voting. It would be done under the auspices of preventing fraud (looking forward to fingerprint authentication before you vote?), but would be used as a political tool to more efficiently track who is voting and from what party. Race, religion, and other demographics would help them to better target people with customized messages in the future.