Make stuns have immediate impact on dashing targets

There is one feature that I really like in Dota, because I feel it more properly rewards fast reflexes and good mechanics. In League of Legends, for the most part, when you are in the middle of a dash and hit with a stun you still continue to move to your destination, but will be stunned in the air, as well as when arrive to your target. In Dota if (for ex) was in the middle of his leap strike and was hit with a stun, he would drop out of the air on the spot instead of continuing the full leap strike distance. If you actually line up your skill and hit some one while they are dashing quickly, I think it is good to be rewarded for having good aim or timing, especially now since this game has far less point and click hard CC abilities than it used to. It would reward skill, as well as make the champions feel more like solid objects and less like liquid entities sliding through obstacles in battle using osmosis.

Would that be harder to accomplish on the current engine than I think it is?