Would there be a way to trigger a plugin outside of the Contextual Menu that I’m not finding any information about? 
Since at the moment I can at least trigger a script via Hotkey:
…before I go on a tangent and try to add Plugins to this:
That Quick Menu Hack isn’t exactly perfect either, given the way that the Scripts menu is dynamically built, adding a new script requires restarting Picard. But it does get the job done.