Missing two Sega genesis (US) items:

1) New Leaf flash cartridge:

Example: https://www.ebay.com/itm/Sega-Genesis-New-Leaf-Game-Factory-Re-Writable-Flash-Cartridge-Blockbuster-NI101/123444464012

Blockbuster game factory carts (blue & green) are included in the current list, so this should be as well.

2) Sega Activator Motion Controller:

Example: https://www.ebay.com/itm/Vintage-Sega-Genesis-System-Activator-Full-Body-Motion-Controller/254026864047

Several other peripherals/controllers are included in the current list (i.e. 6 Button Arcade Stick, Wireless Controller, Menacer gun bundle, Lethal Enforcers I & II Gun Bundles, etc.), so this should be as well.

Could you please add Mario & Lugi: Bowser's Inside Story + Bowser Jr's Journey (3DS). I don't see it as being able to be added to my collection.

Adding a Vita section for purchase would be awesome. Thank you!

Be able to filter games to show the most sales per day first

when you say "several email reminders will be sent before deleting your collection" actually send several, not delete it after the first like you did to mine.

Would be great to get the full list of all portal characters so I can fully update my collection.

There are people that want cover art work for there games. It is hit or miss on cover art / box art online. Some of the time you have to go with a variant art work. I would like to see the ability to print a full cover art work page off from the listing of your games. 

would love to have this on the list too