Personal Collections:
Players A-G, H-L, M-S, T-Z etc etc
and then that way you can see all the members who collect a player - instead of each member who collects a player.
Its kinda different, but kinda the same .... I mean, say you have just pulled a insert auto of player X - but you dont want it .... what do you do??
If the that listing structure existed, then you could just go to that players page - and ask if anyone wants it. And then all the people who specifically want that player can keep an eye out for that area.