Having good passwords stored in a secure way (thank you 1Password) is a good thing.
However the application could include a feature to notify users that password should be changed.
Like KeePassX the password stored in 1Password could have an extra field to store the date the last time the password was choosen. The user could be notified of a password change needed by sending a notification. The number of days for an expired password must be configurable globally or at account level. The application should also include a view of all passwords sorted based on the last password change date.