Not to mention the plethora of people who don't know what their support skills do... I'd love to have bosses that tanks actively need to interrupt. Back in ARR, stun was extremely useful, and a good tank or melee would be stunning AoEs regularly in dungeons, but now, even in those dungeons where stun is still useful, no one stuns stuff... If that kinda thing became necessary in raids, the crying would be deafening...