I haven't gotten alot of raid time in yet, but I was raiding last night and it seemed like I was constantly waiting on active mitigation. Between watching the ground, watching timers, waiting for enough rage to use mitigation, holding threat, and making sure I was in range to be able to taunt at the right time it was getting kinda crazy. If I didn't use my mitigation I was taking alot more damage.
I by no means am a rookie tank as I started tanking on my warrior in Kara, but one of the things I liked about my warrior is he was kinda spammable and I wasn't constantly waiting for a cool down.
What do you think and what are you doing to deal with this?