Yes. According to the OP, the Soft and Hard versions are no longer supported starting in version 1.0.0.5 of Grim Dawn.
Elfie has supplied the source files for the mod, so if you know how and if other mods provide the source files; then you can merge them and make a new mod with this mod included in it.
I can try this later to verify if this does or does not work in a Custom game.
Otherwise, anyone else have this issue?
Edit: The Grimarillion mod has this mod in it. The Grimarillion is a conglomeration of a number of mods. You might want to check it out.