The zone blocking scheme wants quick, athletic linemen. The scheme is less man on man blocking and more shifting laterally to block an area and seal off defenders. That's why runners who are one-cut, high vision backs like Terrell Davis or Phillip Lindsay are so successful in those schemes. They don't have to plow people over or use speed to hit holes, it's about letting walls form and utilizing them to find gaps. Kline is a good fit and, luckily, there are a number of linemen available in the draft that do as well. Dillard, Risner, and Bradburry being chief among them.