Can we give Aatrox's Q the Kha'Zix E treatment?
From: http://leagueoflegends.wikia.com/wiki/Kha'Zix
Kha'Zix's E speed depends on the distance of the jump. Melee range jumps are near instantaneous while long range jumps leave Kha'Zix in the air for significantly longer.
The idea of Aatrox's Q having a long travel time is to make it harder for him to escape or get a long range knockup, but why should it limit his ability to use it in actual combat?