Create custom sets to collect against

Could you also add a feature to calculate

the values of an entire set of games for a console (and have the option

to include or exclude variants and combo carts), or an entire set of

consoles, like every n64 released in the US? You could then quickly see

how much a complete set of games or consoles for a system is worth,

making buying and selling complete lot easier, and allowing people to

decide whether or not to pursue a complete set for a system based upon a

rough pricepoint for what they will be paying.

I would suggest smaller set challenges, to not try and beat the system with massive calculations in pricing without paying (unless the challenges/achievements/minor collection sets are pay to use), and be able to have some public repository of others' submitted challenges. If a challenge gets enough positive user rating, it becomes an official one. 

My examples of some good challenge collections in comparison to yours, would be:
-All the games with reversable cover art
-All the "Only for New 3DS" games
-All the last produced games for each console
-All the launch games for each console (as their own challenges for each console)

This is the third post that I've seen that would be answered with a custom labels feature.

We NEED more customizable filters on our collection tracker PLEASE

Why is the Folder filter a DROPDOWN? It should be allow us to select multiple folders 

When adding new cards/games to a folder from your collection tracker, you should be able to do it in batch with checkboxes rather than having to use the DROPDOWN EVERY SINGLE TIME.  Or, allow us to change the Current Default Folder for the "In One Click" method of adding cards/games to your collection. OR, have an option to "Assign all un-foldered cards/games to a folder" feature.  Having to go back to assign cards to folders after using the "In One Click" deal is a PITA