what a hack; it mostly works, but there are edge cases.

OpenRa.Game/Traits/Plane.cs

@@ -17,6 +17,8 @@ namespace OpenRa.Game.Traits
 			if (mi.Button == MouseButton.Left) return null;
 			if (underCursor == null)
 				return Order.Move(self, xy);
+			if (underCursor.Info == Rules.UnitInfo["AFLD"])
+				return Order.DeliverOre(self, underCursor);		/* brutal hack */
 			return null;
 		}
 
@@ -27,6 +29,12 @@ namespace OpenRa.Game.Traits
 				self.CancelActivity();
 				self.QueueActivity(new Circle(order.TargetLocation));
 			}
+
+			if (order.OrderString == "DeliverOre")
+			{
+				self.CancelActivity();
+				self.QueueActivity(new ReturnToBase(self, order.TargetActor.CenterLocation));
+			}
 		}
 	}
 }