Steem and Steam hand in hand, what a dream!!This is where I spend most of my time anyway haha!
My focus would be on creators at first, Imagine now how much amazing mods and other sub mods will come out of the Steam workshop with the right reward!!!
I mean I've spent thousands of hours on sandbox games like Minecraft, Project Zomboid, Don't Starve Together, Starbound.
They all can be used as tools for creating more content too! (educational, entertainment, gameplay)