Shortcut to Open Relative File Locations from Workflow?

I often embed excel “controllers” into my workflows to simply the User Interface for find/replace and complex formula creation. I would really like shortcuts for one-off access the relative files (or relative folder location of the controllers) from within the workflow. Currently the only option that I have found is to select “Open file after execution” (in the Excel Writer node), which is not easy for a user to find and requires de-selection after every use.

Ideally I would like to float standalone “individually executable” nodes to act as shortcut buttons, but the javascript nodes that I have tested do not appear to handle “relative file paths”. There is also no option to assign a flow variable to the “Open file after execution” option in the Excel Writer node which would allow me to control it conditionally… Any ideas?