Oh my, oh my ...
Do you people actually post after you test things on the PTR, or just /faceroll on your keyboard with the first things that come to mind?
Go on the PTR and see Savage Def. in action. Sure, I lost 5.6k armour and 1.6k hit points but... that 5.6 armour reduces arround 300 damage, while the SD proc with 5k AP reduces 1200-ish damage (over 1200). These numbers are a rough estimation on random elites arround the world, like
Thrym for example. I'm no math guy that has the perfect numers, but on live he hit me for 1,9k on average and on the PTR, wityh SD and the same gear, he hit me for 2,1-2,2k, and 80% (or more) of the dime SD was up (got ~37%crit on PTR) and mitigated 1,2+K of that damage. Overall: he killed me on live in a couple of minutes, but on the PTR he was ezmode, just took a while. Lacerate ticks crit and activate SD, so with over 40%crit we might see SD up a LOT and overall we got buffed for mitigation. The hit point loss is perfectly acceptable as well, just a minor loss.
Adapt to the changes and get over it already.