From a PVE standpoint I want a class that can offer me two types of playstyles. One for single target and one for multi target. For single target I want just like everyone else a class that can have a good damage cooldown and able to go toe to toe with the rest. On aoe I want BOTH of my dots and not only one of them to spread quickly instead of being forced to dot every single creature with Misery. Every other single class seems to be able to do more with half the effort.
From a PVP standpoint I want to see my class being able to not get trained with all the disadvantages of getting silenced your only school of magic resulting in 0 dps. If you intend for the class to get trained I demand crazy damage reduction and the ability to be able to damage back. I do not want protection from another class. I want to be able to fight back alone. Also would it be too much if the Psychic Scream of the Shadowpriest is unbreakable for at least some time by any means? That spell is a joke. Breaks like in half a second if it's not removed by every single fear removal ability. I really miss the 4 second aoe stun Mindbomb that couldn't be dispelled.