The discussion seemed to be focused on recruiting. My comment was about what variables do you measure to decide who to recruit. While injury history/propensity should be a factor, I believe it is silly to use any physical quantity, even more so a complicated set of variables, to try and predict performance when most athletes have a history of performance that can be reviewed. Why predict what you can measure directly?
Once they’re on the team, its a different story. Does increasing mass and strength help? Is speed and power the answer? That’s a different question with a different set of answers. From the article, it would seem that focusing on agility and speed would be more important than increasing size.