You could argue the "privacy" factor and I get it, but I don't really see a problem with this. You're already registered with the state, and the license plate identifies you. You chose to break, evade the law, and not pay your fines. Everyone else obeys the law. So you get pulled over, pay the fine, and be done with it.
I'd consider taking it a step further in the efficiency department. If someone doesn't follow up with a ticket after ninety days or whatever, auto debit their account. Thoughts?