Is there a way that we can add information to current listings such as a view counter, and maybe an option for prospective buyers to leave feedback such as if they feel the price is too high, or the listing needs more pictures? Some of my listings aren't selling and I have no idea if I'm pricing them too high or if they just aren't getting enough visibility/the games aren't as highly sought after as the prices would suggest.

Sort by items you have more then 1 of so I can see which items are duplicates

Sort collection by all non-CIB items

Interested in expanding on your Pokemon Pricing and Collecting into the Magic! The Gathering series. or at least to be able to add to the collection to help keep track of your owned cards and manage and sell them through your site.

I play pokemon so I don't only have one card of a lot of my collection, adding 17 bulbasaur base cards with the standard "add another copy' is time consuming. A quantity input box would be so helpful!

It would be nice to have a feature in the market place to filter listings by loose, game/manual, box, CIB, New