I currently use this feature (send update request) in our ticketing system that we use as a means of communicating with my vendors ticketing system. Once my vendor uses the link they are unable to provide any other real time updates due to the link being a one time use only. It would be great if we can choose for the link to expire or not.
WE also have this need. I may be a person that is assigned 14 tasks in a given day, but other work needs to start as soon as I complete a task, so I don't want to wait until all tasks are complete before clicking the link. Since the link expires after some of the tasks have been updated, there is no way to easily solicit additional updates apart from spamming task owners with email (one per task)