I've had a very long running search and it would be awesome if I could see the progress of the program visually from its task bar button. Yes, I know it shows the percentage and that's also enough to find it after a few glances, but typically there aren't that many programs that have some operation in progress (downloads in browsers come to mind). Which means that it would stand out better if the progress would be visualized. That interface has been available since Windows 7.
Thanks for considering,
PS: this would be nice for both the main GUI and the Index Manager, actually.