about the combo, this was always the case, 70-80% of the time drk spammed hard slash>syphon strike>souleater.
about blood price/weapon its kinda the same(?) instead of blood price you will use delirium i guess or simply blood weapon, since it works in deff stance too. the resource management kinda changed since every class now has 10k mp, its new and i couldn't test, so i don't want to speculate on that.
the "magic tank" thingy they wanna keep and the way they design some skills.. i don't fully agree with the devs on that. dark mind nerf was weird, i could see they want to streamline the numbers, but it only works on magic so they could have let it as it was, dark missionary : there comes the "magic tanks" stuff and the skill is simply the weakest of the 4 tank support skills imo. so yeah i agree with you, i hoped it would have been a tbn for the raid (like shake it off) with some perk for the drk maybe, but a 15% magic dmg reduction is weak ( not that it cant be used in the raid for the aoe dmg if its magical,what it usually is, but still...) compared to the other tank skills which all involve magical and phys dmg.