Not sure about FIFA 16, but in FIFA 19 i remember the squad files when opened in RDBM have team traits which decide how a team plays against a stronger, weaker or a team with equal strength. It intern did make team have an identity.Making teams have a more logical and dinstinct style of play is probably the most difficult part. I haven't found yet the way to make certain teams to hold more the ball, still gotta look at it. But in general terms, the game is evolving quite nice.