he falls into the broken category.
the moment you buff him to be good enough to compete, hell be too good. hes a champion with 2 kits. means the only way not to be op, is when the individual kits are weak enough to not compare to more specialized champions.
but then if you want a ranged champ you rather go with a marksman or mage who are stronger than him in ranged form. if you want a melee champ you rather go with a fighter whos much stronger in melee.
if he could compare to a marksman at range and a fighter at melee, he would be unfair. its kindof the problem with these jack of all trades champions. its almost impossible to get them into a spot where theyre balanced.
ive seen this in my time playing wow, when they tried balancing druids and shamans. they never managed to hit the spot where theyre balanced. theyre either weaker than more specialized champs in their respective roles and outshined to not be pickworthy, or theryre too good at everything.