Cool! I'll check it out tonight to activate it on my server. Keep developing your plugin! From what I've seen, I've only found yours, which allows players to have their own little world and invite their friends.
are permissions that a user or group can get. That works the best with LuckPerms. I think you can add other permissions with sizes to have more variants.
I down't use WorldSystem as it's an sepeareted project, but if you have a config part for the world-creation it may be possible to add console commands.
I don't know if that is possible. I never tested that and it isn't my task to do these tests. If it work that's cool, if not well than not. I'm not planning to actively support any NPC plugin.
I'm also thinking about moving on to another environment. So that WorldSystem will function as a addon to another world management plugin. I'll also drop support for the spigot and bukkit server software in the near future. I'm doing this because WorldSystem is a overcomplicated plugin that could use the functions of other plugins much easier than doing it by itself.
What management plugin I take depends on different things. For the Server software it would be Paper (and it's forks). I mean at the moment nobody uses only spigot/bukkit if I look up the analytics from bStats... so nobody should have issues with that.