The more I ponder this conversation, the more I see what the confusion was. We were thinking of leadership in terms of how we think of the church. If the church is what the bible describes plus additions such as the big building, the programs, the budgets, etc., then leadership almost has to come in the form of one strong senior pastor. Someone has to be in place to keep track of all of the stuff that the scriptures do not talk about.Yes, it will be tough to convince church folk who see a need for buildings, staff, budgets and programs that you don't need someone appointed to oversee it all. So I imagine most Christians will just think I'm some kind of crazy anarchist. :)
However, if church is what the bible describes and no more, then leadership can fall into the hands of multiple people. In fact, each person in the body can show leadership in his or her particular areas of giftedness. The elders should primarily display leadership through being sacrificial examples of servanthood to the body. No one man is needed to take care of all the extra stuff.
How we view leadership in the church necessarily stems from how we view the church itself.
But if the church is simply the family of God... I can imagine it functioning with only Jesus as the head.