Engineering with in Arena?

[heyaz]

I was under the impression that the pyro rocket and frag belt (maybe?) triggered a 10 second internal CD on trinket pops. No it doesn't burn you trinket cooldown, but from what I understand it does trigger a cooldown on it (making it impossible to pop, say, your sorcery disk and then a pyro rocket).

Other than that, I'm concerned about losing a lot of stats with engineering, and I'm not quite convinced (prove me otherwise!) that pyro rockets are the difference between a kill and an enemy at 10% hp that gets an instant heal. I wasn't able to kill full furious (or furious/deadly) players until I broke 2350 sp unbuffed, just because I'd always leave them at just a few % hp and miss the kill. I don't have furious weapons, relenetless accessories or all epic gems, but I think 2550 sp unbuffed is possible, and I can't imagine anyone surviving an instant cast x4 with over 3200 spell power with trinkets and blood fury.

Maybe I'm wrong about all this, but I've always found raw stats and spell power to be superior to one-off gimmicks. Maybe it's different in quad box arena. But what about everything else? WG, battlegrounds, world pvp. I'd hate for my finishing move to be a engineering thing that was on cooldown when I needed it,