I like the idea. I think we need more niche-interest instances like lemmy.film, lemmy.studio, literature.cafe (yours), startrek.website, ttrpg.network, slrpnk.net, ani.social (ours), etc as their respective admins understand the needs and issues of their communities better. Also we already have so many generic and tech instances to choose from.
You can ask one of the lemmy.ml admins.
lemmy.ml disabled new community creations. You need to join a different instance that has community creation enabled.
Good to know! Have fun with your new instance!