When working with a flow that creates a task based on a trigger it would be great to be able to assign links based on dynamic content such as the attachment of an e-mail that was a trigger or an attachment to a Outlook Task that was a trigger.
This assumes that "flow" would take care of moving the attachment to a one drive location (or perhaps that becomes a configuration setting) that allows for the file to be shared via a link.
Assuming this is probably possible with a Logic App, just doesn't seem to be exposed in Flow as of yet.