I think it would nice to have the standard options 'Inspect' and 'Open containing folder' available on both the FeatureReader and the FeatureWriter. These are great functions available on normal Readers and Writers and as we move more and more towards their Transformer-based counterparts, the existing functionality should be moved over.
As both the FeatureReader and the FeatureWriter support multiple Feature Types, the Inspect option could have a pop-out on the side to select the desired Feature Type. This would be a screen similar to the 'Attribute Value' selection menu. You could even include an option to inspect 'All' Feature Types.