Blocks with cards and tile galleries now have a widget that lets you quickly duplicate, delete, move cards and images, or add new ones. Just hover over an element to reveal the widget and choose an action—no need to open the Content tab.
The widget is available in blocks from categories like Features, Reviews, Services, and others that include cards. Note that for blocks in the Store category, the widget is only available when you add products via the Editor, not through the Product Catalog.