Here are a couple of my thoughts, pulled from the thread on the beta forum.
Binding Darkness: Your Mind Spike slows its target by 25%, stacking up to 2 times and lasting 10 seconds.
Crippling Pain: Targets of your Shadow Word: Pain or Holy Fire are afflicted with Agony, reducing their movement speed by 50% for 10 seconds. This effect can only occur once every 6 seconds.
I would kill for some kiting ability, just a little bit, but I just don't think turning Flay into our kiting spell is the right choice.
By the way, Mages can't do that. Frostbolt has a casting time AND a travel time. Also they're squishier than we are; they're supposed to be better at kiting. I just wish, on a scale of 1 to 10, if they're an 8 that we were at least a 3 or 4, rather than a 1.