With my collection growing larger and larger, thanks to seasonal sales and my expanding Steam family, I’ve been facing some challenges managing all my available games.
I love the addition of dynamic collections and have been playing around with using them to manage my library. However, I think dynamic collections could really benefit from some additional features, especially the ability to include/exclude certain tags or game states.

These are some dynamic collections I've tried to create, but couldn’t:

• A collection that only includes my locally installed games, both owned and installed through Family Sharing, but excludes games I marked as private.
  Suggestion: Add an exclusion option to all available filters.
  
  
• A collection that only includes games that I have not installed locally and excludes games I marked as private and games available through Family Sharing.
  Suggestion: Add an exclusion option to all available filters & add an Ownership Type filter.
  
  
• A collection that only shows games I've played in the last x days.
  Suggestion: Add a Last Played or When Played filter with a customizable time range.
  
  
• A collection that only shows games that have card drops available.
  Suggestion: Add a Card Drops Remaining or Has Card Drops Available filter.
  
  
• A collection that only shows games for which >95% <100% achievements have been unlocked.
  Suggestion: Add an Achievements Unlocked filter with a customizable completion range.