He doesn't require a buff but he he REALLY needs updated. Despite appearances, he has one of the highest base AD stats for both Divers and Assassins. The problem is WHY he needs that high base AD.
As he has no real means of sustaining himself and only gets a messily 4-6 Armor and MR (depending on how late the lane phase goes), he has to be far more careful in match ups then champs like Riven who have a stun, 3 mini dashes and a shield dash to keep her safe or Darius who can Q to recover some health. Every hit Wukong takes in lane without a
charge (and you WILL want
generally speaking) is far more harmful then anything most other champs have to deal with. They can't give him straight Tank stats to deal with it either cause... I mean... Higher burst then an Assassin, mobility AND the defensive stats of a Tank? That's going to cause some issues.
But this is exactly why a straight buff won't fix him. He needs more utility with a mechanic that will make people go "I'm playing Wukong cause he's got this mechanic that stands out". Should he have a better laning phase then Riven who is supposed to be a Hyper Carry? Yea, she's made to dominate late game while Wukong is only supposed to be good late game. His lane phase should be easier since he doesn't scale as hard later on. But not like this. Not the flat stat buff way.