Interesting, but how are you going to evaluate good training? The proposition of OP is quite simple, no pops or # of pops under a trigger -> potential drop. Your proposition gets into the field of subjective opinions IMO.
It would be pretty simple the other way around - but in the end maybe getting rid of potential or cutting the potential to just three or four groups (benchwarmer, sixth man, starter, star) would be a good idea.
Größter Knecht aller Zeiten aka His Excellency aka President for Life aka Field Marshal Al Hadji aka Lord of All the Beasts of the Earth and Fishes of the Seas aka aka Conqueror of the Buzzerbeater Empire in Europe in General and Austria in Particular