Aatrox's Q should make him untargetable

I played Aatrox when I got him, and I love him. Hes tanky and a fighter in top lane and can jungle. But I don't play him as much anymore because of his Q ability. I like how it knocks the enemy up and is a gap closer as well as an escape. But I don't like how he's still targetable by basic attacks and abilities. You can try to escape but if you get hit by a stun or something, that's it, hes screwed. I tried jumping away from a fight and when I popped his Q to escape, out of the fight I got hit by a Lux snare and I ended up being rooted while i was in the air and stayed in the exact place where i started. He should be untargetable until he lands. Like Fizz's E ability, just as soon as the ability is cast he should be untargetable until he lands. I think this would be a viable buff to him. Making his Q to where hes untargetable would really improve the amount of people who play him. What are your thoughts?