Should consoles have standards, hard or soft, for which buttons on their controllers do what?
You don't have to play many games or play often to be annoyed by disparity in controls. One game uses Left Trigger to aim and the next uses it to direct squad mates. One game uses the Y button to jump, another B, another Left Bumper. It would sure make life easier for gamers, especially occasional gamers, if we could count on some familiarity in controls.
By the way, this is one of the reasons occasional gamers get discouraged from becoming regular gamers. Every game's controls are a challenge to learn, because little is familiar.