Any skill that requires you to select a party member or use a ground targeted AoE is hell on Controller. I'm currently playing DRG and thanks to the fact macros tend to not work I have a habit of just using Dragon Sight as a personal buff. On a controller you have to hit Down on the d-pad at least twice just to select the person under you, then hold L2 or R2 and use your ability. It's a lot to do in between rotations especially with all the oGCDs DRG has. And if the person is out of range like the person above said Dragon Sight doesn't just activate for you and your cursor change back to the enemy you are fighting. You have to hope you notice it didn't activate then quickly hit circle to go back to fighting the mob. It is a very annoying skill to use.