Fx
Unnecessarily Rude
I've done some comparisons and sims for the set bonusses and it's fairly interesting.Plate also gives up secondaries to get the proc, but at least it's a strong proc. I can see it working on a fury warrior or frost DK who will probably be able to trigger it more reliably.
Doomplate 4-set is actually a valid option for PvE. Turns out you don't lose -that- many stats (dropping 44 haste but gaining ~25 crit) It has good uptime when you can constantly hit someone for several minutes straight. Too bad that Plate DPS are garbage atm for raiding.
Might be alright for PvP because it adds a bunch of stamina as well which can help. I don't see Plate classes having uptime on many things though.
Wastewalker 4-set is really good all around. Probably not so great for specs like Sub where you're not really spamming damage into people, but for a spec like Assa it should be easily better, because you don't really care about -when- the proc happens, as long as it happens.
Mana-Etched 4-set is just bad. 2-set is good though, but we already knew that. 2-set is good for everyone, with only a few exceptions. Frost Mage is one of those. When you're fully geared as lvl70, you'll have way too much crit already and the set bonus simply isn't good.
Desolation is pmuch the same thing as Wastewalker. Good for all Mail specs I'd say, they're all about just spamming damage until something drops.