How about rage generation from being damaged?
What Blizzard says:
Rage from damage taken will no longer be based on a standard creature of the character’s level, but instead will be based on the health of the warrior or druid. Again, there is a constant that is multiplied by the rage generated in order to allow for fine-tuning. This calculation ignores all damage reduction from armor, absorption, avoidance, block, or similar mechanics, so improving your gear will not reduce Rage gained.
For this I don’t really have any solid numbers, but I’ll present my quick findings. Naturally as prot you will gain rage from blocking or spell reflecting, if you are specced into it, but now I’m talking about just simple being hit without avoiding of any kind.
I asked Ceraius and Kakos from my guild to damage me in few different ways. We found out the following:
* 950 damage melee swings gave me 1 rage every time.
* 3700 damage Howling Blast gave me 3 rage.
* 4300 damage Chaos Bolt gave me 4 rage.
* 5300 damage Soul Fire gave me 4 rage.
* 9500 damage Chaos Bolt crit gave me 8 rage.
* 12530 damage Soul Fire crit gave me 11 rage.
* 1700 damage Immolate DoT gave me 1 rage
So the pattern is somewhat seeable. An awfully rounded rule of thumb could be 1 rage per 1000 damage, but as we can all see, it isn’t exactly true, but quite close.
The game will also remember digits here since when Kakos Immolated me, the initial 2200 damage it gave me 2 rage, the first tick put it up to 3 rage, but the second tick made it up to 5 rage.