Thats what i never liked about DK and now DH, their health yoyo like that because they have good/decent self healing which means they have to have weaker cd's/take more damage to balance them. There are going to be a crap load of DH's and sadly bear share an AC with them, my raid team has me as Bear and my co-tank is torn between war and pally for Legion.
What sucks is that with them removing bonus armor from neck, rings, and cloaks it means there is more competition for a drop now especially with them removing MS also. Crit, Haste, or Mastery are going to be the top stat now for every one while vers is just the red headed step child in the corner.
As for Relics for our artifacts we already planned out that when raids open up, every one must know their BiS relics(which relic at same ilvl boost the trait most beneficial to said spec) and they will be MS rolls while non-bis will be OS roll. This is to keep a 875 BiS on a player instead of 875 non-bis on some one else. For example a 875 Relic that boost Iron Fur armor %, its duration, or increases the DR from SI will be BiS to a bear and thus considered MS while a 875 that increases Maul is considered OS.
Personally I'm going Soul of Flame (875) +3% DR to SI, Phial of Fel blood (875) +4% to Iron Fur armor gain, and Parasitic Spore (875) +3% DR to SI as my 3 BiS relics.
Can see the others at
http://legion.wowhead.com/artifact-c...ImFCJic7QBO6Ag