It would be great if Peter preached more, wrote more, and archbished less. In fact, how great it would be if he were back at Moore College; not necessarily as principal, just speaking and teaching theological stuff.
It's a humble job, of course, to be a theologian, whereas to be an Archbishop is to be a prince of the church. Tony Payne compares the job of theologizing to being a sewage worker [edit: originally, Jim Packer—see comments], whose task is to make sure that once the brown stuff generated by humans hits the ocean, it's pretty much been cleaned up. It's a dirty, inglorious job they have, but true health depends on it.
Others want to glorify the job of theologian in deeper and profounder ways, turning them into mystics, magicians and wise people teaching the rest of us poor saps how we ought to be thinking about God—a sort of real life 'Defence against Dark Arts', where the poor students hope that they can pick up enough to save them from bad stuff.
Jesus said to him, “I am the way, and the truth, and the life. No one comes to the Father except through me. 7 If you had known me, you would have known my Father also. From now on you do know him and have seen him.
That's all we little ones need in the way of theology, and if the academic theologians are doing their work well, we won't really notice that anything else is going on.