Well, among other things a Discord server can have many channels, so we can have distinct categories, for example:
-questions about the game (Maybe an FAQ)
-suggestions and direct updates
-sharing fanmade stuff (Settings, Order color schemes, Enemies etc.)
-organizing and playing games of SK
-general hangout and chats and such (I respect that you don't like this part much, but I for one would be really happy to get to know this game's community a bit more)
Then, of course, we can also consider that Discord is a great place to get new attention to the game. I could set up a link to DISBOARD (A website where Discord servers are listed so people can join them) for the server and make it public, so curious souls can join, get info and tips from the people there and then grab the game from itch.io, which we could link on the server too.