Warn User when assigned Hotkey is already in use

The Asssign Shortcut feature is great when you want to change the shortcut to something more convenient ou when the tool doesn't have a pre-assigned shortcut. But It just doesn't work when you assign a hotkey that does already exist for something else more over Blender will never tell you this.

Instead, having the software actually tell you that that the hotkey is already in use for something else would be best. Maybe even say what other tool exactly is using it and giving the option to choose which to keep perhaps.