Your right hand will need to be pushing the shoot buttons on the controller to fire. By the time you aim with the right analog stick and try to switch to shooting, the target has already moved. Furthermore, you won’t be able to shoot and aim at the same time.

Only three things will ever help a FPS on the console without a keyboard + mouse combo.

1) If the shoot capability was built into the analog stick somehow (like how you can aim and shoot with a mouse)

2) If FPS games started utilizing lock-on modes so that you always shoot at your target.

3) You grow a third arm.

The second point will meet protest from some FPS fans as they’ll argue that lock-on mode will take away from the fun and challenge of an FPS. Also, games like counter-strike will become too easy as your ability to kill someone depends on where you hit them on the body armor.

The third point is physically impossible, but, seeing as how cows and chickens are stuffed full of hormones before becoming consumable, it may not be too far off.

That leaves with the first point. The right analog stick must be built in a way where you can aim and shoot with the same stick. If not, then we shouldn’t expect a surge of demand for FPS on the console.