Assign watchers to a status (column), so any tasks that are moved to that status, the watchers will receive a notification.

Example: Everytime a task has a status changed to "Ready", I want to be notified, so I can do what is needed to be done, like publishing the task(feature) in production environment or email our clients.

Today, the process in my company is to flag me or assign comment to me. But of I receive a notification from a task that is on lane "Ready", this would save time.

The little things are the ones that take more time than we realize.