Modded worlds and vanilla worlds in multiverse?

That would be wonderful, indeed. I’m not as wise to the server architecture as some of you, but basically this would be the ideal situation:

  • Player can join the server without requiring the mods running in the mod world and can play normally in the vanilla world, but cannot join the mod world (but them trying won’t kill the server or their client) as explained above by OffLuffy.
  • There is a shared chat / player list between the vanilla and modded worlds, so communication works and mod/admin commands work regardless.
  • If possible, all mod changes are ignored in the vanilla worlds. Naturally, this would also require independent inventories.

How viable does this sound?