Suggested improvements

• With the current "Delete issue links" action it is only possible to delete all links of a given type, which is to coarse for many applications.  It would be great to be able to specify the links that should be deleted in a finer form, analogue to the way linking issues works. That means extending the current action to include an option to match an issue key and issue link type which should be removed. This extension should work with little impact on the current state of the action, as the current state deletes all links of a given type regardless of the key of the issue, which could be the default option for the improved action.
• Allow smart values in the delete Link action - It is possible to insert smart values for dynamic values in several automation actions but currently it is not allowed to type or insert smart values into the Delete Link action:

Workaround

You can use the REST API endpoint Delete issue link within the automation action Send web request to delete a specific issue link.