why aren't there more mods on worldbox

I feel like this game would be peak with more mods. I can think up a few ideas for some. Theres only a couple good ones and that's off platform. Why hasn't maxim made a steam workshop for mods yet? id love this game 1000 times more fs if it had the same mod capabilities as say people playground. I assume the only reason there arent more is that this game is hard to mod.