or how about badspot adds workshop support
steam has individual chatrooms for games that would basically function as the IRC already
The workshop is the most absolute garabage addon manager I have ever used.
If somebody doesn't like your addon all they need to do is file a DMCA complaint, and they won't even look at it, it will just get taken down, aside from that its the worst system hands down, if a content creator deletes their addon, its removed from your game.
Its also sorted poorly and most of the times will be spammed with "server packs" or other nonsensical garbage, the only game I have seen with decent workshop support is besiege, but even it doesn't get it right.
The only thing I see workshop being useful for would be saves since there is no way to share saves easily, but thats about it, and since Blockland works, if theres a save you really like and want to keep you can do another save in Blockland that way if the save gets a dmca complaint and it gets taken down you still keep it.