As a "real life" golfer, I use my body to determine how far I want my shot to travel. I also can hit a draw/fade based on my stance and swing method. Hitting distance and shot shaping has come from practice and experience. In real golf, there are times when the weather dictates that I hit a punch to the green with a longer club than to take a 100% shot with a wedge. I also use my "Golf Caddie GPS" to tell me distance to the bunker, distance over the bunker and distance to my "guess" where the pin is on the green.
Since we use a meter to determine shot length in "virtual golf", looking at a meter without any markings is difficult to judge that 3/4 swing or that 40 yard pitch. Practice has given me that in the real game. My eyesight judgement has yet to give me that with the meter, and probably never will.
As a math-head and programmer of 30+ years (COBOL was my first true love), I have a clear plastic cover that I put on my monitor to give me the percentage marks. I have the driver, irons and wedge markings above the meter (12 1/2% increments) and my putter markings below the meter (at 10% increments, with highlights for 25%, 50% and 75%). Once I incorporated these markings, my scores began to drop like a stone.
I do not mean any disrespect. I simply disagree with your post regarding marking the meter. You still have to judge the shot (distance, elevation and wind) and hit the ball accurately to get that desired 67 yard shot or 55 foot "Eagle" putt.