Hello!
I have been working on the next big update! When I do end up releasing a Steam version, I definitely do not want to lose the awesome player who have been playing for free. More details will come as the time draws near, and I am thinking of giving out keys to everyone in the Discord server (another great reason to join).
As for the Steam Workshop / modding, I have plans to incorporate these in, especially since a lot of the work with the game console easily transfers over to adding in custom items and stuff.