Tangotiger is once again putting together a scouting report by the fans. Unfortunately, they haven't gotten a lot of Marlins responses. Please check out Tangotiger and fill out some scouting reports (you can fill them out for other teams/players too if you're comfortable doing that).
Here's an overview:
Try to judge "average" not as an average player at that position, but an average player at any position. If you think that Chone Figgins has an average arm, then mark him as average, regardless if you've seen him play CF, 1B, 2B, or 3B.