DC teleports you also in los of your opponent, doesn't it?
Warlocks dots still tick when wl made some secconds (coe before teleport helps). Mage doesn't work with Dots
And if you are badly stunned as a Mage and use blink you sometimes blink 1 yard and the melee still hurts you
So both talents have their plus and minus.
You as a wl got an awesome talent. What are you doing? Crying instead of loving it. Of course it isn't the uber talent, making you immune to everything while increasing damage by 1000% and flying above the target cO