So, I'm a gold player, and therefore, I can switch around my attack and defense order stack by stack.  This is a great perk (and I use it all the time), but It seems to me that the interface is clunkier than it needs to be.
When I click on a stack on the main map, the individual units show up in a box on my lower right.  Why not just  let players drag those units around to tailor the fight order?  A shield/sword icon could be pressed to select attack and defense order.  This seems slicker to me than having a tiny window open up for these controls.