It would be helpful to be able to have a toggle which will show only the suppressed components in the model tree OR be able to highlight only suppressed components in the model tree.
There are several useful reasons for this functionality. But one that comes to mind is when you need to delete a component in the assembly and you are unsure of what other components may be affected when you perform the delete. I prefer to first suppress the component to see what other components also suppress due to an assembly constraint or relation. After suppressing the component, I like to navigate the model tree to see all the other components which will be affected once I execute the delete command.