First change the passive which really add nothing to his these and play style.
Turn his Q into a skillshot with a decent extended staff range that could knockup/knockback champs based on their distance from it.
Wukong is a master deceiver from the book/story , so giving him trickster outplay potential tht takes skills would be nice.
(E) , I'd turn into a dashlike ability using clouds. One of his traits that you can't enjoy using in the game is the CLOUDS. So maybe allow him to summon clouds that could stack up within a decent range to dash on them , something like that.
Reduce his ult duration , like 2 seconds from 4
Buff the per second damage but reduce the overall damage.
Now that I think of it,.why not make his passive summon clouds on the map that I could play around and use as a mobility enhancer.