Always love to follow your threads Shrew.
Noy new, but the big question for me is how do you plan to use stats to find good defenders and DMs given that things like interceptions, tackles are a function of role and team setup as much as individuals skills.
I guess you also miss out on big retraining opportunities that I think are great ways to find value, eg move a CD to DM, DM to FB, AM to ST etc