To me, pattern play in rotation games (shoot the balls in order) like 9 and 10 ball is not really about the decision making, but achieving optimal position to get from one ball to the next without too much effort. When commentators refer to being "in line" and shooting the right patterns, this is what they mean.
A good drill that I do to warm up is to throw three balls onto the table (1, 2, 3) and shoot them in order. You should try to achieve optimal position from each shot to the next. With three balls, you're thinking two shots ahead.
Once you can do three balls consistently, try four balls.
You'll hear commentators refer to being on the "right side" of balls often which means that the angle off of the object ball goes toward the next ball. This is why being straight in isn't always a good thing.