So because you can Ctrl+Alt+Right click a object in the 3D view to select a texture set, makes things alot more streamlined, and less cluttered
Only issue now is that you wont know at a glance which texture set you are on until you open the Texture Set List which in turn adds more clutter
So as a proposal, have maybe on the bottom right corner of the interface a indication of what texture set you are on. Could add customization options on how opaque you want the text to be and how large Or on the program title bar (after what shader setup you have: something like "substance Painter 2019.2.0 - PBR - Metallic Roughness - TableGreen_Top"
Add somewhere on the interface