Interesting idea. This is somewhat analogous to USBSafelyRemove, which displays hidden usb devices in a separate list. I thought it was a silly idea when I first tried it, but now I find it quite handy. I can see, for example, things like my usb printer and scanner, which don't normally appear in Windows default Safely Remove sys tray icon... Point being if I can find a use for this sort of feature in a safely remove hardware feature, I'm sure it will be useful in an app that displays hidden services, device drivers, etc. in a system tray icon.
I like it.