Yes to all of this! I especially want Meridian city, almost like how Kadara port is organised, then an option to leave and explore Jardaan artifacts and ruins around the rest of Meridian. I think that Jien/the Benefactor, Dad and twin as a squadmate could be candidates for the second game, though a dlc where you and your twin hang out/do twin missions/character build would be good. I really want a Quarian Ark DLC too but I feel like that will be a major focus of the next game.