This may be an option and I don't even know it or its already been discussed, but if not I think it would be nice to have the option of viewing all players' ratings based solely on their skills without their physical weight having an influence on the overall rating.
For example instead of a running back who weighs 250 lbs. (because he was originally a TE) only having a rating of 65 because the weight is too heavy for a traditional running back, he would have a rating of say 73 regardless of weight because that's what his skill set really is at.
Hope this makes sense.