AGDAD19, that approach is fine in theory. The problem is, at this point, you can't even get someone to follow the simple guidelines of a straight pitch count. Look at lionsdad for example. His sophomore son threw 130 pitches in a game and he doesn't seem to think it's a big deal. In an earlier post, he said his son threw 125 pitches and 140 pitches in two separate games. I'm taking that to mean that he has thrown over 120 pitches in a game 3 times by his sophomore year. Actually, since he is a 2017, this must have happened during his freshman year. I think by any standards, that TOO many pitches. There is no way this dad and this coach are going to follow a more complicated formula for figuring out pitch count.
The most pitches my son has ever thrown is 119 and that was as a sophomore in college. I think he has thrown over 100 three times. Generally stays under 100. I think he threw 105 in HS once, the others have been in college. Let's get the word out about limiting pitches in a game and pitchers getting adequate rest at the youth level first, then we can start individualizing the formula.
JMO.