I would like to see the popularity of different items in a set (for example, how many other collections an item is present in) and to be able to sort items by popularity.

I see we now have the option to add Ebay sales. Would it be possible to add Heritage Auction sales as well? There are a few items that weren't added until after the sales happened, and they're rare enough that no sales have been registered since. 

For silver and gold coins, it would be nice to have a running total of how many ounces of silver and gold you have in total for the entire collection

As a nostalgia lover, I’ve been collecting these cards and would love to have a online catalog of my favourite NeoPet Cards :) 

They are some quality cards and have great artwork. 

interest in squishmallow trading card prices

Allow us to track prices of Pachinko machines in our collections. They are arcade adjacent in my opinion and fit right into a game collection. (I realize this is a relatively niche request)

I like to check my games in alphabetical order how ever games like snes Lost Vikings and The Lost Vikings 2 are completely separate because of “The”. Would be nice to have option of putting the at the end. 

A Bleach Thousand Year War Union Arena cards to the site