One of my mates and I often consider each other's collections when buying games so we don't double up - some of the FFG games he owns are some of my favourites - but I can't list them as so unless I add them to 'my collection' - which I don't really want to do because they are not in my collection.
So - It would be nice to be able to list a game as either owned and/or played.
This way I could have 'played' games in my user collection that I don't actually own. This in turn would allow me to select games I don't actually own as favourites should I choose to do so.
Not really necessary I suppose, but there you have it. A small suggestion.