The biggest issue with the current form of damage reduction is it is flat across all classes. This heavily benefits classes which can heal. It should scale depending on class. The hybrid tax is valid in PvP.
Lower reduction
Warrior
Hunter
Rogue
Mage
Warlock
Paladin
Priest
Druid
Shaman
Higher reduction
I agree 100%
Each character skill should be balanced each on their own.
anything less than that is blizzard being lazy.
They have a team of like 5 people. There’s no resources for that
Just nerf Shamans another 50%.
scale down runes abilities in line with classic abilities.
That’s all that needs to be done.
takes 2seconds to rewrite each skill.
there is no excuse stop letting this company (they hate you fyi) manipulate you into lying.
Oh child, it’s not lazy… It’s called being cheap.
In order to do this, blizzard would most likely have to have a smaller SoD team designated to PvP balance within the entirety of the SoD team. You know, exactly like they do in retail.
But, Blizzard is a small indie studio and can’t afford this nonsense.
I mean, they had to pull devs from SoD to go work on the most requested re-release expansion yet… Cata. 
look dude Activision Blizzard only made 8.71 billion dollars last fiscal year, they simply don’t have the money or resources to afford like 4 more people for PvP balance