From a "Christ the Center" podcast - a rough quote:
Our expectations of a pastor stems from our ecclesiology - our thoughts about what a church is.
If our understanding about church is that our priority is social justice, our pastor will be our chief social worker.
If we believe our goal is to affect political change, our pastor will be our community organizer.
If "church" is about our friends and family - a neighborhood clique, there will be little outreach.
If we know that our church exists to proclaim the person of Jesus Christ and His work on the cross - and to equip the saints to do that - we will expect that the Gospel be preached from the pulpit each and every week.