Not sure if that wasn't mentioned already, but collection search/filter/list could use some improvements:

• Exclude keywords. For example if I want to filter out PC/Windows games, right now I have to enter all other platforms in 'Select Platforms' input. Something like '-PC/Windows' would be simpler and easier to use. Same goes for other inputs (tags, formats, progress, regions, genres). So to search for all games without mystery tag, all we would have to do was to search for -mystery

• Bulk operations on search results. Adding tag to all games in search results, adding all games from search results to a list, deleting all games from search results, etc.

• Better lists. It's a great concept that we can save some parts of the collection in a list and then later use that lists in other parts of the site (like specifying a list of games eligible for choosing for mission). However, as it is now, they are pretty useless as the lists cannot be easily created (see point 2, no bulk add, I could go through my collection and add each game manually but that would be tedious for large collections). Also, the collection is still growing, so the lists need to be maintained, which is time consuming too. A better approach would be to allow to save some search criteria as a list. For example a list "No Steam" is created dynamically as results of search {"Platform" : ["-Steam", "-PC/Windows"]} and list "PSV JAP Imports" could be defined as results of search {"Platform" : ["PlayStation Vita"], "Region" : ["Japan (NTSC/J)"]}, and so on.

Bulk editing and saving filters are on my radar as part of the Collection page revamp. The exclusion filters are interesting and something I've considered in the past, but they can be tricky to lay out in an intuitive way, given the amount and type of filters we have. I know it would be handy though, especially when I want to play a console game and a big chunk of my collection is on PC :P