My trouble with temporal distortions is that there is not much defense against it. You can counter mos of the things with at least one other affinity - light with shadow, water with fire, conjouring with anything destructive, etc. Gravity and time are one of the things that can only be countered by itself. I suppose it would be less annoying if you could only target an area instead of a creature/object, so it can at least be dodged or escaped.