No, I don't think this has been suggested before, but initially (before the first release) I was planning to have exactly the same feature. I worked on that for a while, but I had to remove it at the end because it wasn't ready for the release... This tool evolved since that time in another direction, so as you said filtering by name can be used to simulate something similar, but then yeah, it all depends on naming conventions... So I'll try to do the folders with the next update, besides those other new features I've promised earlier. May take some time tho, as I'm still trying to finish a huge major update for the Script Inspector 2. I hope that's ok?