What's wrong with Pantheon?
Everytime I use him, it seems like he is essentially useless late game. I mean, there are some champions who fall off late game, such as Lee Sin, Zed, Elise, Renekton... but they aren't completely useless late game, Lee Sin for example still has his ult, which can be used for peeling. Zed is still unduelable late game and Elise still has her stun which can potentially be game changing. As for Renekton... He is tanky as hell.
However, I don't find that Pantheon has some of that usefulness. He is one of the few, if not the only champion that falls off late game... literally. Everytime I play him it seems like I have 20 minutes to end the game before I start to become useless because Pantheon doesn't have good damage, neither does him have good damage, and he has zero teamfighting presence when compared to many other champions.
It seems like he is THE definition of a champion who has massive early game presence to make up for his poor late game. What can I do to change this, or is Pantheon meant to work that way? I rarely use Pantheon because, even though he has the potential to win most lanes, unless my entire team is snowballing it feels like I will not be of any use for my team as Pantheon.
Q,
's new passive, or a turret shot. Though beyond that it doesn't help against extra effects of empowered auto attacks like silences or stuns, and I'm not sure how effective it can really be against melee champs who have very high attack speeds. It's like stopping one bullet from an AK-47, only to be riddled with the rest. Sure one bullet can save your life, but it's a slim chance.

And most of those are kind of late game champs. You'll just have to ride along after a point. Do what you can, and hope your high damage people can keep control of team fights.