If you can get it, check out the "Mighty X" tape by Bert Kinester. During the drill, he lines up a shot from pretty much inside a pocket, the object ball is in the middle of the table, and the objective is to draw back into the pocket or follow into the pocket. He wants you to do with NO warm-up strokes, just line up the shot, settle down, and hit it. So there is a high-level instructor that thinks this has some benefit.
Now that I think about it, I *think* it's the "Mighty X" tape that I saw it on, that drill is a bit different but that shot may be part of it.