I recently leveled my vengeance DH (first time), and geared up in basic LFR and Argus WQ gear. I copied her over to the beta, and holy sh*t - that is one good feeling rotation / fun spec to play in BfA. I really like the spec into fracture replacing shear - with a choice of spending your pain on spirit bomb (if talented) or soul cleave. It just feels solid, mobile, and really fun to play. Survivability is great - I see a lot of people complaining about being squishy on the beta, I'm guessing they aren't referring to Vengeance. I pull as many mobs as I can with leashing and just DPS them all down and my health never dips below 50%, same with elite world mobs. Totally leveling this one first!