This is particularly important for the search template in block themes. Currently, if a search returns no results then the query renders nothing on the frontend:

Ideally it should at least inform the visitor that no results were found for their search term. But it would be better to offer folks a way to customise this state with blocks.

Some design consideration will be required here, as blocks cannot currently entertain multiple states.

This affordance could also be useful in other scenarios:

• Post Content block – enable users to control how password protected posts appear
• Design separate empty / full states for Shopping Cart blocks in plugins like WooCommerce
• Log in / out block – finer control of each state