What do you guys think about the idea of being able to CC bosses to a degree. I think a system like the bRez system would work. You'd get to use like one or two cc's during the entire fight. Nothing game breaking or that'll drastically change the fight. Just sort of a buffer to help groups that are struggling. Like the raid is pretty low on health from other mechanics and you get the bad luck of the boss about to cast raid wide AoE, use a stun or interrupt/silence (which duration would be scaled down 50% on bosses) just to help buy your healers a little bit of time, but have this be very restricted as to not become strategy but rather a second chance. Possibly even have it share the same pool as brez, so you don't get two brez's and two stuns.
You know you'd feel clutch as fuck if you stunned the boss right before he was about to wipe the whole damn raid.