One widget I’d find useful is an Undo Business Action widget for end users.

Mendix developers can revert changes during development, but once an application is running, end users often have no simple way to reverse an action they performed by mistake.

For example, a user accidentally archives a customer, assigns a case to the wrong colleague, changes an application status, or removes an item. Instead of navigating back and manually correcting it, the application could temporarily offer an Undo option immediately after the action.

The developer would configure which actions can be undone, how long Undo remains available, and the microflow or nanoflow responsible for reversing the action.

It would bring the familiar Undo experience we have in applications like Gmail into Mendix business applications and could be useful in CRM, case management, HR, finance, and many other enterprise scenarios.