I understand where you are coming from completely. I am aware that statistics are of less value in football than in baseba;l and often people judge players on statitics that they are in no control over ie. a striker will have low shot% if his teamates are supplying him with poor quality chances on goal. As for my approach I intend on investigating the correlation/relationship between certain attributes and performance.
I believe that 99% of FM players value the wrong or at least miss some attributes when looking for players and therefore make more error when judging a player to sign. I am looking to investigate precisely the most important attributes for each tactical role to ensure good performance and thus remove as much of the error in judging a player as possible. Thus making my signings more efficient, making better use of my transfer and wage budget, and ultimately building a winning squad.