I'm also from somarium - I would love to see Emma there! It fits all your preferences save castmates. The premise is that characters - while dreaming, in a trance, meditation, unconsciousness, or death - are brought to a planet where dreams interact with waking life and are ruled by the moon. The overarching plot is kept up with mod-hosted events involving dream energy, npc actions towards the characters, and nightmare creatures; however, it's possible to play entirely in a slice-of-life way if you prefer. You can show your characters dreams over the network against their will, have interactive dreams, walk into other characters' interactive dreams. Again, that is completely optional. Player plots are welcome and there's a lot of room for them! You can also have your character run across cards that affect their size, age, turn them into a Disney Princess by giving them a crown and forest animals to stalk them, amongst other things. There's a friendly lake creature, a desert full of monsters, a floating mountain, and the modern city and village where most people live.