Why not let Kha'zix jump over skillshots and ground effects?

So, I think general consensus is that Kha's in a rough spot at the moment. Wondering how hard it would be to let him jump over projectiles and ground effects with his leap, and if that would bring him back into a better place.

To clarify, I think untargetable would be too far -- chasing projectiles should still chase him -- but it's also really weird to see him get killed by, like Tormented Soil while he's thirty feet in the air. Would also give him an interesting point of differentiation, and I don't think it steals too much limelight from the characters who have 'true' dodge mechanics.

Anyway, food for thought.