This is for any class. Just so you can cancel a spell you started.
Instead of ducking, un-ducking, and recasting, you just click the spell again, and it'll auto interupt the spell, and already start recasting it. This post doesn't need flaming. It's a neat idea, and would only help. Shouldn't be a number 1 priority, but it would be nice to have.
This is a suggestions forum, for those who are lost and thinking they are in general disc.