Let us build our own fortress, with all our characters, dragons and gear inside 😄 or selected dragons, relaxing in their caves, flying around keep etc. Friends can be able to visit our keep, also we could name it
We could choose from different environments (existing ones for example), different architecture styles (from kingdoms mentioned in lore, like Skeld, Valkurians …), add decoration (like banners we collected), maybe some roaming people, collecting clothes and armor for them…
We could start from nothing, like plain rock, and collect building material from quests, randomly from battles, events, buy from shop …
And our main character, which we can name (and choose/change if we wish) standing there and doing something cool 😄 like interacting with main dragon, discussing plan with others, overseeing build …. Doing random mini-quests, like obtaining food for inhabitants and dragons, gear, secure the area from intruders because workers cannot deliver wood or stone if roads are dangerous, fight with wild dragons and other creatures as single-player PvE, or maybe with friends...
I think it will be cool to add something more we can progress, and customize it 😄