No revenge is still #2 behind Shield Slam as the above poster stated.
Is the new priority with limitless rage now devastate, and only use revenge for the low rage/stun situations?
The real benefit of this talent is the increased damage to revenge (+20% w/2 points.), not so much the stun effect.
Also, is the utility provided by the improved revenge stun worth the 2 talent points?
If you already have Focused Rage in your talents then no and even if you don't the answer is still probably no. With the amount of damage you take as a tank your rage bar should be full almost all the time. The only situations it wont are in heroics with really good gear. But with the newly added rage on avoidance that should help some.
Additionally, if devastate is now the second highest priority behind shield slam, then does it make sense to spend 1 to 3 points in puncture to lower the rage cost of devastate?
In any event you will never be so rage starved you cant pull off a Devastate, even with out Puncture or Focused Rage.
Hope that helped,
There is something so appealing about backhanding someone across the face with a shield.