Dear lwerthe1mer...
The number one thing that helped me improve my percentage of excellent pictures was to define for myself exactly what criteria an excellent indoor soccer picture has to meet. (That got rid of 2/3 of the pictures I was taking, that I never should have taken in the first place.) Example: An excellent indoor soccer picture should always include: (a) the ball, because that is what the opposing players are fighting over the entire game. (2) at least one home team player and one opposing team player's face toward the camera and not their back side to allow viewers of your image to "feel" the clash between them and understand the story your image tells without words. (3) enough surroundings to let viewers know the location and context. (4) high intensity action because no one wants to look at someone just standing around. (5) Proper exposure and tack sharpness with no blur or noise making it a pleasure to view.
Hope that helps. Shooter41

Dear lwerthe1mer...

Thank you for taking the time to view my image and make an intelligent suggestion. Actually I need to go back to my faster 1/2000 second shutter speed to completely freeze the action and capture more detail, rather than go to a lower shutter speed than 1/1600. I may just have to live with noise in the dark areas of the image to avoid "over cooking it" in post-production.

Perhaps you haven't attended a professional indoor soccer game and observed how the ball is kicked at 80 miles per hour and things start to get blurry when one sets their shutter speed slower then 1/2000 second. Shooter41