Very similar to CLEAR. I love the idea of expediting security at the airport but I hate the way the agent moves them to the front of the line. It is very awkward.
Why are there slow lanes for people with less money in a government situation?
Can you pay extra to skip the line at the DMV? (actually, you can in California, by having a AAA membership)
To the question for government agencies to market they services, I absolutely think they should. Often marketing it's just informing people that something exist, so if they government wants people to use some service or change their behavior, they should do marketing.