Defensive projections have been added for all players.  These are based on major and minor league totalzone ratings.  I may look into incorporating the Fan Scouting report ratings, though it was tough enough to set this up as it is.

It's an imperfect measure, so some of the defensive ratings are going to look wrong (Aybar at -2 for example).  But it should give a reasonable estimate most of the time, and for over 1300 players.