I dont think the changes to Xin are OP.
I think they brought him up to par with other Auto Junglers.
What makes Xin changes OP is Rageblade (it also makes all the other Auto Champs OP too)
Riot needs to remove Rageblade and see how Xin and the other champs play out for a few weeks.
Then re-think Rageblade
Abyssphere2 votesI don't agree. I think Rageblade is fine and actually an interesting item. I think the problem with Rageblade is that none of the champions who use it have any gameplay or mechanic requirements whatsoever.
Everyone who's OP with Rageblade right now has been OP with other items on many occasions in the past, largely because any time they synergise well with an item they become freelo as they are impossible to fuck up with. Rageblade is just the current item of choice.
Give auto attack melee carries anything close to a skill requirement and they'll be allowed to have good items. Stop scapegoating items when the problem is the champions.
5050BS1 votesThen the problem is Riot making champs that most of their damage comes from Autos. They will not change these champs and probably not stop making them so the only option is to remove the items that make them OP.
Who else uses Rageblade? No one.
Malhammers1 votesI agree with you...it would help the Jax and Yi problem as well. Mainly Jax, but ya, I agree with you....this item needs some tweaking to say the least.
5050BS1 votesAnd 
They all saw a huge jump because of Rageblade