Elefront is a fantastic enhancement to the Grasshopper ecosystem. I had anticipated that Rhino’s native tools would be compatible with it, particularly the new set of tools from Rhino that incorporate materials and display mode functionality.
What is missing is the items you mentioned above, as well as the quick query using the Value list component.
I think it never worked before, and if it worked was by mistake.
The intention was to enable features step by step and in theory linked blocks was still unimplemented like worksessions.