I heard that some sever have the guild hall features, something in between a garrison and a dungeon. those halls will serve for guilds to have a space for social and improve player skill, fulfil with trophy and servant. but also could be a dungeon/raid experience for other guilds due to some guardian that guild can hire with gold or mats.

This could be a nice feature for endgame content and a good way to improve social interaction between players and also guild.

thanks for reading