In the current collections view, I can only browse, for example, my US GBA games and my JP GBA games separately. I would like a feature to view all of my games for a particular console, and then filter based on region. For example, choose GBA as the console and then have three checkboxes for either US, JP, and PAL.

Quick heads up for some bugs in the drop down menus.

When trying to access the JP Super Mega CD, you get redirected into the american Sega 32X section. 

Currently the only way to access the JP Super Mega CD section is by typing in the URL or going through the NTSC or PAL Sega Mega CD sections.

The Gizmondo is not showing up in the "Other System" drop-down menu. Can this be fixed?

Add the Commodore 1541 Floppy Drive and variants to the website.

I want to register all my consoles but i'm having trouble with some missing ones, os anyone can add then for my, i'll be greatfull. These are the folowing Wiki of each one:

Zeebo: https://en.m.wikipedia.org/wiki/Zeebo

TeleJogo (unfortunatly i only found in portuguese): https://pt.m.wikipedia.org/wiki/Telejogo

TeleJogo 2 (also in portuguese): https://pt.m.wikipedia.org/wiki/Telejogo_II

Dsi XL Wine Red: https://uk.webuy.com/product-detail/?id=sdscdsixlwr002

There are at least a solid 100+ new NES games released on carts professionally. The indie development community for retro consoles has exploded over the past 5 years and it is a shame that they aren't represented here on price charting as they are bought and solid often on ebay and within the community. I'm not talking hacks or little homebrews. Full on releases from company's like Khan Games, Retro USB, Passe Gaming, Broke Studios, and Mega Cat Studios just to name a few. Many are fully backed by Kickstarters. I think it's time to add them to the database.

This will allow me to add if a game belongs to a series and then users can search on it and see all games that belong to that series. “ Bomberman, Castlevania “ and such.

Colecovision is missing from the drop down list. 

I would be happy if I could track my Gizmondo games.

Sure they are low in numbers, but if the N-Gage and Pokémon Mini gets one, Gizmondo should get one too! 
 

Many collector's editions of games include a steelbook case as a limited or exclusive item that is heavily traded and sold in the aftermarket on eBay and personal ads. I believe many of them have a significant value that can add another layer to the item checkboxes for included items (such as box only, manual only, loose items, etc). It could also be included in a separate section like the Figures tab as well. I have many of these cases myself and would love to be able to have prices tracked for them and have a way to keep an updated list of the ones in my collection. Thanks for your consideration! :)