Kill things faster - Bloodcraze is really poor, even at it's best, it's like a 1.2k/s heal for 5 seconds.
Impending Victory, if you don't need the DPS, might be more valuable, as crazy crap can go on in the last 20% of a fight, but at the same time, faster death = less chance for error and you're probably going to be giving up a noticeable amount of DPS depending on the talents you give up.
Shield Spec - only give this up if you are raged capped and using HS on CD. More rage generation is good, even if it's not for DPS (Shield block, enraged regeneration, pummel, demo shout, thunderclap). You don't want to find yourself rage starved when you need one of those. Top players drop it because, well they're far better than me. But I don't think you'll gain a lot from dropping it.
Right now Imp Rev is really the red-headed step child unless you run a lot of dungeons.
Keep Battle Shout and Thunderclap up. Keep them up over DPS. Or make sure someone else is keeping them up, but you'll probably want to keep them up yourself.