Also see: QoL: Improved deck management and selection system (graphical mock-up inside!) Collection management could do with some QoL improvements to handle your hundreds of favorite cards.Allowing the user to define custom Tags (possibly with an associated Color-Icon pair) would make filtering your collection a more easy task, allow for faster deck creation and encourage tinkering with new variations of similar decks.Below is a GUI mock-up showing the key features:- a new menu to create custom user-tags- the tags icons being displayed next to the cards (the chest-spin icons could be reused for this as to keep them separate from actual card icons.)- since deleting a tag would remove all instances of that tag on cards, a special popup should warn the userSome things not featured in the mock-up:- filtering cards by their use in a given deck, only showing cards used in that deck. Essentially behaving like a hidden tag for each deck a card is used in.- text-notes for cards. Just some arbitrary string the user can attach to any card, taking notes specific to it. (Would like to see notes for the friendlist too.)[Blocked Image: https://i.imgur.com/p4UfKFX.png