Want to give us level 90 talents that change our gameplay and make us take critical decisions? Alter our gameplay? That's what they were supposed to do, right?
It is not that hard. You level mage's damage with the rest of the classes and make the prizes behind RoP and Evocation real. 15% real dmg buff; HOWEVER, give us a punishment along with it. You want to stand in your RoP, mighty mage? Make us take 15 or 30% more damage when standing on it, or make it tick a dot that slowly decreases our health and increases the more time I stand on it. You wish to evocate to get a damage increase, mighty mage? Take Evo's CD back to 40 sec and make it so that if you receive any damage while doing it, you get stunned for 8 sec and get no buff. You want to use IW, mighty mage? Take away the passive bonus and make it situational, exactly as it used to be... even make us take x% more damage while the buff is active.
Mage's nature is to be damage dealers. We don't mind taking more damage. We don't mind having no defensive raid cooldowns, not even after rogues got their smoke bombs. We're not in the raid to save lives. We know we're squishy and, again, we don't mind, 'cause we're mages and have tricks up our sleeve to survive even if we're taking more damage. This is our nature. Give us a reward on our lvl 90 talents, even if it, at the same time, punishes us in other ways.
Can you imagine? You would have to decide exactly when to evocate, since doing it wrong could cost you your life and your damage during the try. You would have to choose when to stand on your RoP and, even though you'd be forced to stay in the same place, you'd be getting a great reward for doing it. You would get to choose when and how to do it, and you would be able to compete with the rest of the classes even if you didn't. You would make huge mistakes and die while trying to deal more damage, causing your Raid Leader to shout at you and forcing you to get better.
Something like that would be awesome. That was the spirit behind putting these talents in the game for mages, that's what the Devs wanted to put in the game. Our level 90 talents ARE fixable. They just need to want to do it.