I have not had any issue with war except of course removing flash kinda makes levelling harsh on tp. For bosses have no problem doing a normal unchained pull and then switching to deliverance and holding agro. One thing I have noticed is my old BiS since we pretty much avoided parry like the plague with raid gear when I hit the 65 dungeon the trash start to hit like god damn trucks so started to change my gear with a mix of 66 and 64 gear with now 998 tenacity and plan to run the dungeon again to see how much better it feels. So War feels fine as is atm and hoping it gets better at 70, just required a little adjusting at the beginning, still annoyed can't infuriate pre pull though so goodbye 60s raid pull.

Also guys remember tenacity is a thing now, if you feel squishy might mean you just need more tenacity.