Setting up instances is kind of a pain in the ass. I frequently find myself struggling to remember the exact path to a file and then having to abandon instance changes in order to check on a file path, or alt-tabbing over to an explorer window to investigate a file path. It'd be nice to have the expanded options button in the instance editor allow us to interact with the file browser while working on an instance. Maybe adding an option "Reference File..." that would open a browser and allow you to select a file you'd like to use as a variable. This would come in as a cache reference by default. This shouldn't just be limited to dmis though, as I often reference sounds, html, and json files via an edited instance.