Deepen the Stealth
One of the most interesting mechanics of The Last of Us was the stealth. This was used to not only avoid the extremely powerful Clickers, but also sometimes to outright avoid combat entirely. While most of the game offered up areas that you could sneak through, it never felt like that was the option it wanted you to take. There just weren’t enough options or routes that a player could take in any given combat scenario, resulting in a rather linear experience of the action.
Now there is nothing wrong with this, however, it would be nice if full on confrontation didn’t feel like a requirement to pass through certain areas. Opening up the levels and offering a variety of non-lethal options could make for more dynamic gameplay. The Last of Us is a world about survival, so wanting to save as much ammo as possible could help emphasize this concept moving further.