you asked:
"If there is something keeping you from making your list, tell me, because I can't think of anything."

I'd like to see fielding ratings and vs.righties and lefties splits. I'd also like to see pitching grades and clutch ratings, etc. If your solution is to search for each player in a realtime league to get this data, I think that is too time consuming and don't have that much time to search out each player.