The addition of a mission/quest system would provide a little structure for those times when you don’t feel like building and already have explored the entire map. On Siptah you could have Valeria hand them out; on EL there could be an NPC in Sepemeru.
Bounty Hunting: generate an NPC somewhere on the map. Bring back their head. Many could be in normal camps. Mission fails if killed by another player. You get a notification. Others could be more dynamic hidden in places and you need to track them through a “tracking system” to be implemented.
Bring Back Relic: Generate relic hidden in a chest in one of the dungeons or vaults. Find it and bring it back.
Lots more possibilities. The game really would be greatly improved by more dynamic content.