Durango 5.9 Magnum R/T any advantage over any other 5.9 Magnum

The head cracking is no big deal, doesn't effect anything most of the time. So you think a flat cam motor is better then a roller cam? There aren't that many differences between a magnum and an LA but the changes to the magnum were improvements not steps backward. Why on earth would Dodge go through a bunch of work to make it worse?