The next usability challenge is not conversation—it is reliable action across tools and permissions.
Action raises the stakes
Drafting a response is reversible; sending money, changing a record or deleting a file may not be. Systems that act need confirmation points proportional to the consequence.
Permissions must be understandable
An assistant should receive only the access needed for the current job. Users need a clear view of connected services, recent actions and a quick way to revoke authorization.
Trust will depend on recovery
Useful assistants will explain what they attempted, preserve logs and support undo where possible. Reliability includes graceful failure, not simply a high success rate.