Feature Suggestion - Isolate Layer

My biggest gripe with Substance Painter is not being able to isolate and view what an individual layer is doing. Once you have a lot of groups and layer stacks it becomes extremely combersome to toggle layers on and off. Could we utilize the drop down menu in the viewport that allows us to view individual maps and channels to give us not only a layer mask preview but the selected layer(s) as an option also?

Better yet, just give us a node graph, please and thank you.