I think the questions have some validity, but they are not as powerful as some other questions. The first question, "What can I do to make you more effective?" is a weak question because it presupposes "I" am "Your" answer. I don't think leaders can add value, they can only release trapped value. These are more management questions. Leadership questions would be ones like the following:
What is your contribution to the problems that are bothering you?
Are people means to my ends or ends in and of themselves?
What purpose is worthy of my surrender?
What change must I embody to lead others to change?
What courage is required of us now?

David McCleary, author of Leaving Prisons: Release Your Trapped Value