I am on with public dungeon but when it is really a public dungeon. The problem of BA right now, it is not. Public dungeon = every people can go in if they like and go out if they like. Example of this is emergency mission of diadem which practically all people in the instance can join. For BA, I think SE need to make 3 BA instance in every hydatos. 1 BA instance will max 48 people. Remove the support NM requirements (just make it ordinary NM). In addition chain the AV "super buff" to room mechanic only.