Tank and melee survivability is way too high right now with these changes. As per usual lately, SE has completely over corrected with knee jerk changes.

And I say this having been playing NIN in FLs today. The only times I died was with 5+ players focusing me down and chain CCing me. But this isn't a NIN only issue, all melee and even more so tanks, are massive damage sponges now. Ironically, this actually just makes the NIN LB all the more useful given how much more difficult it is to chip away at tank and melee health pools.