I've gotten used to it by now, tanking with the new paladin prot tree, but this one teensy tiny little itsy bitsy problem remains: my interrupt is on the GCD. In practical terms this isn't really a problem. Most casts that I really need to interrupt, I'm thinking of the shock on the one boss in Throne of the Tides, are long enough that I can still get the interrupt. And of course there are so many other classes with interrupts these days, so in theory I never need to interrupt.
But in theory I am perfectly of sound mind. In practice: no. You see, I have ASCS: Avenger's Shield Cooldown Syndrome*. When fighting casters I am nervous. On edge. Twitchy and distracted. Every time I press a button I hesitate, then nervously press it and cringe, because this might be the time that I trigger the GCD when I needed my interrupt.
On average I will have an interrupt very often, thanks to Grand Crusader 2/2 giving a 20% chance on CS or HotR to reset the CD. I should be able to spam away for aggro. But then it might be on cooldown when I need it. Odds are it won't, but odds are if the odds go against me that bad things will happen.
So I cry.
Someday I hope for an answer to the mystery: why does Grand Crusader put a buff on me that does nothing?