Jax kind of struggles to fullfill his lategame melee hypercarry fantasy.
Just a thought of the day, for a grandmaster at arms Jax isin't the lategame hyper carry he is rumoured to be. Fiora's rework truely made her into the frightening lategame duelist that tears apart anyone in her way with the true damage. You gave Nasus the tools to debuff the tanks and deal massive amounts of damage to anyone that tries to tank him during his ultimate. But Jax? Lategame he is far from hypercarry. For one thing his kit is outdated and he is really boring to play. His hybrid nature makes him scary during early and midgame if he gets ahead, because it's hard to itemize vs him, but as the tanks and bruisers start to pick up armor and magic resist his damage becomes neglectable.
Standart Jax gameplay is him trying to reach the ad carry in the backline since he does nothing to tanks, only to get chain cc stun locked and blown up / kited by an adc. Which is why, you usually see Jax players afking at sidelanes. Gotta admit, he is still one of the best tower takers in the game, one of the few things he still excels at.
All things consideted I think Jax needs atleast a small gameplay update, make him more interesting to play/ show his skill. Maybe allow Jax to reduce enemies armor /magic resist if he attacks you once he reaches maximum stacks on his passive, making him truely scary to fight for extended periods. Give him tools to outplay cc or atleast reduce it, for example instead of the boring, and hardly noticeable aoe damage reduction on counterstrike he has now, make it so that Jax completely dodges crowd control during the first second of activating it, similar to buffed Garen's w. Thats just some of the ideas I have, all critisism/ suggestions are appreciated.