Enhancement request: Ticket Escalation on stale tickets

[1guardianofthegalaxy]

Requesting a feature to follow-up with open tickets that have reached a threshold of no update after XX hours or YY days. Email would be re-sent to the existing assignee. For example: ticket created and assigned to "helpdesk". 5 days later there has been no update to the ticket. Response to this could be:

1. Notify the original Responder
   or
2. Re-notify the assignee
   or
3. Auto-close the ticket

Looking for the feature request for option2: re-notify the assignee. The other options would be beneficial as well, but at least option would work to help ensure followup. Everytime the threshold was reached, the response would continue until ticket closed.

Thank you for the consideration.