Here's the rub.....all fractional systems have gaps, including yours, and those in the know are well versed in that but will not speak up here. AtLarge is the exception to the rule.
Although, there a strong degree of accuracy to what you present, there are still fine feel adjustments that are required. See if Dr Dave will present your work in BD as a no gap center cue ball with the same stringent guidelines as used for CCB CTE. No chance that Dr Dave would endorse that assertion, nor would Bob Jewett.
If a player is so low level that they can't telll a 2 from a 3 they will need all the help they can get. But telling a 2 from a 3 is only a few days worth of work. It's that simple.
Stan Shuffett
I agree that for balls sitting close to a rail it should only take a few days to become somewhat familiar with certain angles. Not precise, but familiar. Move those balls out into the middle of the table (away from the rails and farther from the pockets) and the angles look completely different and become much more difficult to visualize.
It's an art that requires an acquired skill. Pick ten people at random and ask them to sketch a simple image, like Porky Pig or SpongeBob SquarePants. Even with the image in front of them, maybe one or two will naturally be able to get very close. Then three or four will be close enough that after a little practice they might be able to do it. But there will always a few that have no artistic ability at all. These people will have to invest many hours of practice before acquiring the skill needed to draw the image.
This occurs in all areas of learning, especially in pool, where certain images aren't plainly seen but visualized or imagined. Most pool players have the time to play once a week for 2 or 3 hours. That's why the average remains stagnant in skill level. If they had more time, or had a Stan Shuffett or Dr Dave available in town for weekly lessons, I'm sure the learning process would go as quickly as you say. But that's just not the reality of it. I've seen the same players struggle year after year, despite decades of available aiming info like ghostball and traditional fractions.
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