Smart picks and screens, head fakes, etc. are all that you need to get open for that one-half second that you need to get the ball off. The pick and roll is the most underused great play in today's game. And must of the frenzy in today's game is the fact that many of the player's cannot consistently hit the medium range jumper. Fix the shooting on your team, and then add great athleticism to that, and you will have a championship caliber team. But don't forget the defense.
Great shooters have confidence in themselves and they love to practice, they love to shoot.
They know they must work hard at all phases of the game, because you have to be in great condition and have great skills to get to those open shots, to work without the ball, to fake, and move quickly and strongly when they get the ball. You need to be able to run the break and play strong defense, too. We are born perfect concentrators. We are just screwed up by thinking too much. And finally, as you put it, great shooters have flawless mechanics.