An update where you could sort your inventory by quantity would be a huge help

When adding new games I found I can only select NTSC for CD-I games. If I select PAL, the CD-I doesn't show in the consoles list. But it was invented and first released in Europe by Philips, and PAL very much has a different line-up with its own catalogue codes and even country-specific releases.

Please Add Duel Deck: Zendikar vs. Eldrazi (DDP)

You may not hear it enough, thank you, your hard work is paying off and I amongst thousands of others love what this site has become. I come here just about everyday and work on my collection and I also have the Collector Sub. Honestly, I am a bit addicted to the site. ;)  But with that being said I wouldn't have this issue if it wasn't because of all the hard work that your Developer's have put into it. Thank you for giving us a place to log our collections and making it one of the best on the internet. 

Boomer

The "What's Included" section is very nice.

Whether Item only, CIB, item and box, manual only, etc.

But no option for Map only or Poster only.

Games these days come with maps and even posters. GTAs (map), Red Dead 2 (map), Tekken 4 (poster), The Darkness II (poster), and surely plenty more.

Selecting the "Manual only" option seems a bit misleading to select when all someone has is the poster or a map from a specific title. May seem mundane to some. More precision overall? Just a thought.

Also

Can we select multiple values in the What's Included drop-down? Make everything an individual value and we can then select each specific item that is included? Thanks

I can have 3 open pages: 1 for auction listings. 1 for price charting. 1 for Google to verify release date(s).

If Price Charting included release dates right at the top near the items other information I could only need 2 open pages.

Please Add Magic 3rd Edition sets, Thank You

Would be nice to add little Star or whatever, what shows that i have finished the game.