I disagree with how you down play the mastery of pool. It might not be rocket science but it is a definitely a "feel" science. Also you say there is rarely brilliance exhibited on the table. Have you watched Alex, Shane, or Dennis play lately??? All those outs they make look "easy" on cam are easily botched if you don't pay close attention to your CB control.
The rest of your post was good info. I live in reality and the reality is if you don't treat it like rocket science than you will end up being lazy.
Have I seen them play? Sure. I have yet to match up with the three you mention but ive played in events with them. When Shane is playing Alex, the difference in the match might be some amazingly brilliant shot, no doubt but that brilliance isn't why he's better than you or me. He's better than 99% of the world because he rarely misses. He's better than most pros because he has that little extra you are referring to.
To get to open speed, you need to keep it simple and make your shots.