I love this idea. I'm always searching for the Operation-dialog (on almost every OS). When using my phone (Android) I can track the process in the notification-window. But on other OS, I need to search that damn window (it's always hiding for some reason..)
…and presumably remains accessible should the user close pantheon-files midway through a file operation (the file operation continuing to completion in the background). If memory serves, this is how nautilus works. Does pantheon-files not already do this? I forget (it's been a while since I conducted a lengthy file operation outside of the terminal)
P.S. I'm loving this new indicator mock-ups ~BassUltra. Can these be implemented as is, with all the visual splendour (e.g. 32/48px icons, etc…), with the current state of the art?