I was looking through your new wiki (raider101) site at the ret pally rotation. I noticed you put divine storm in the #5 slot (or whoever edited) for suggested rotation.
I question this in the case of running 10 mans or heroic raids if you also equip the Venture company libram which increases your crit strike rating for 7 sec after divine storm. Does it not make more sense to judge, then use divine storm as all further attacks (for 7 sec) will have an increased crit rating? When I do this, I usually can cast crusader strike, exorcism (if possible) and sometimes another judgement while the buff is still up.
Am I misunderstanding this libram or is this just not yet noted? Does thislibram not cause spell crit and only melee crit? I just wanted to make sure my difference in rotation was plausible.
I believe the Libram is both melee and spell crit. The reason Divine Storm is lower is that all the other attacks are higher damage. As well, because Crusader Strike/Hammer of Wrath is on a short cooldown, the more you delay it, the more damage you end up losing.
Don't forget that abilities will come off cooldown after you hit DS. So you are only gaining extra crit on a couple of abilities and only at very start of the fight. That's not enough to outweigh the loss of delaying the higher damage abilities.
However, the difference between the various priority schemes is very small. My advice would be to go test rotations out on the training dummy.
My second question is on my cooldowns. I've been told by many tanks (including pally's) to NOT use Avenging Wrath at the beginning of a fight. I've been told that if I do use it, I will pull aggro off the boss and I should save it for the middle or end of a fight. What's the correct answer?
You should use Avenging Wrath very close to the start of the fight. You do need to give the tank a few seconds to build threat, but good tanks can generate threat very fast. You should be able to pop Avenging Wrath at about 10 seconds into the fight. If you can't, your tanks need to improve. Now if you have to delay, you delay, but you should try to pop AW as early as possible.
The reason you use Avenging Wrath early is so that you can use it again when it comes off cooldown in the same fight. You should be able to use AW multiple times on every fight longer than 2 minutes (which is pretty much every raid fight).
A lot of guilds will also use Heroism/Bloodlust early, so that everyone can pop their cooldowns together, while still being able to use cooldowns multiple times during the fight.