I have just had my dedicated server griefed by people who have joined due to the lack of grief proof that is in this game.
Personally I think something should be implemented asap to prevent this. IE: Valhiem has a ward thing that can be placed down or even if you click on the bonfire and have a permissions list in it for other peeple or certain people access to it.
another thing I think should be added is the use of chat, ability to see other peoples pings and markers if you choose so and then also be able to create partys which allow all the people in the party to have all use of perms.
anyway this is annoying as hell so yeah i know the game is new but asap implementations are preffered