Just checking math:
12% every 3 sec, so 2.4ppm for current procs (while tanking or OT) on one target. PLUS innate avoidance proc chance (Let's go with 2sec swing @ 35% avoidance): 30 * .35 * .12 = 1.26 PPM. Total current PPM = 3.66
30% of (let's call it 10+25% avoidance) means we'd need to get hit 34.9x per minute to equal the current rates; so once every 1.5 sec. So 1.4 sec swing seems right to be a net gain.
Now, we COULD stack some avoidance to get more proc's but you're looking at ~4ppm here. FOUR. One HoPo every 15 seconds. Raising avoidance to 50% total would bring us up to ~6ppm. So, pick up 15% avoidance (which, with DRs is paramount to ~20-25% haste), for an extra 2ppm. Of course, these numbers are ST, MT values would be linear extrapolation though.
3 targets should yield ~12 PPM in current gear, up to 18ppm in full avoidance. 5 targets @ 20ppm/30ppm. Etc.
Anyhow, this is the change that I'm the least pissed off about. It really sucks for times that we have to offtank (zero procs), but we make up in spades on AOE packs.
Still really confused about the BH change, given the fact that monks retain statue shields (shields ALWAYS > healing) and DK worms (as unreliable as they are).
And still baffled at the SOI change without and recompense. I'm still holding on for a blue post on that, GbtL HAS to be buffed substantially, else the spec simply will not function.