I think it would be helpful to have the ability to add a custom sort option. For instance, my brother and I have a joint collection and I'd like to be able to see which items are his, which are mine, and which are mutual. Or if I wanted to label all the games I wanted to sell, or games that I need to focus on finding better conditioned copies for. I saw a few items in other suggestions that I think a custom labeling system could solve.

https://www.videogamesage.com/topic/1032-nintendo-m-series-virtual-catalog/

Include all of these M-Series Nintendo display items so we can track their prices

Hey,

I have Individual Figures for Rabbids Mario, Rabbids Luigi, Rabbids Yoshi & Rabbids Peach from Mario & Rabbids Kingdon Battle. They are not available in the data base to add to Collections.

I have cut back on collecting in recent years, except for certain series that I really enjoy, such as Zelda, Tales, Silent Hill, etc. It would be nice to be able to, for example, see all of the Castlevania games in one list regardless of which console they are on. That way if a game I want came out on more than one system, then I could see which ones it's on and how each has held their value. Also, being able to see which one is the original version in cases of games being ported after release would be helpful.

A function or graph that shows an ROI or return on investment from an input that a user enters as the value they purchased the game for and another to show current market price. Then gives ratios and graphed trends of specific titles over time. 

I would like to see the price drops and increases of individual items while still looking at the collection as a whole.

Hi, is there an update for having a UK marketplace? We have a burgeoning games trade here but we’re all using FB Marketplace which is a bit hit and miss. Would love to hear any news on this topic!

Another website I've used in the past is VGCollect and it has a nice feature to display your collection by platform. I think this would be interesting to see for both just raw number of games by platform but also value by platform using Price Charting data. Even if we couldn't get a chart, I think it'd be nice to be able to see the value of our collections by platform.

I like to be able to see at a glance if my items increase in value.

If they do, add a green up arrow,

if they stay the same, a yellow line,

and 

if the go down, a red down arrow.