About the new Jax lore
The self-styled Grandmaster at Arms known as Jax is a mysterious warrior and sometime mercenary renowned for his prowess in combat and biting sarcasm. While exceptionally skilled with virtually every conceivable weapon, he often chooses to fight with a mundane implement, such as a lamppost, in order to give his opponents a sporting chance.
This right here means that you removed one of the single greatest moments in all of the lore. That it would not have been hard to work around, and that is the point in which he rips a lamppost out of the ground and proclaims to the world that it is all he will ever need to beat anybody.
I know that the actual league is out of the lore (yet for some reason the rift still exists) but he could have been a tournament fighter before he was a mercenary, and then rattle off a streak of victories that had never even been remotely seen so people who ran tournaments decided to not let him use a real weapon in a fight for the sake of fairness.
Just a (not so) humble Jax main's thoughts on the matter.