You got to be kidding me
Shadowpriest is insane right now, our dmg, sustain and healing peeoow.. amazing. I have to agree that
being chased by double melee is a pain in the ***, and worst of em all is warriors. But I feel they are solving some issues by fixing avatar en not to mention gag order. Its gonna be a huge buff for casters in general, or nerf for warriors, depends on your view.
Then again, its a good idea, atleast until p 5.1, to play with a mage or something that can peel for you, but shadow is viable by far in arena. Currently the best caster imo.