Would it be possible to show a defensive backs abilities? Aka Zone Defense, Man defense ratings? Just a way to try and build a team better, if I have a coach who runs primarily a man defense, I wouldn't want to roster a DB who's more man over zone.

There aren't specific zone/man abilities in the game. Man may benefit from a bit more speed and zone may benefit from a bit more intelligence? But it's not really a black and white call for sure.