Browsing the marketplace no longer means guessing which items you already own. Cards for sceneries, models and styles that are already in your account now carry an "Added" label, and their "Add to account" button is turned off so you cannot add the same item twice.
Because many people work across more than one workspace, the listing states which account it is showing. Switch the account and the labels update: an item already in one team appears as available for another, so you can still add it where it is missing. Your choice is remembered between visits and applies to all three catalogs.
There is also a "Hide added" option. Turn it on and the listing shows only what you have not added yet, which makes a long catalog much quicker to work through. It is off by default and stays as you set it.
When you open "Add to account", each workspace in the list now says whether it already holds the item, so you can see at a glance where it is missing before choosing.