The queue method is typically used for operations where you can fire something off and move on. If you need someone to be notified of an error, you could send an email to an administrator or maybe you write a custom log message somewhere that is monitored.
The exception handling in the queued activity would be the same as in a regular activity so I thought the concern was if there was a need for user intervention. Can you share more details on the scenario you are trying to address? Maybe an example would help.