Honestly what would be nice to see implemented are:
Defeated animated scenes
Island bosses (with subsequent rare loot/items/etc)
A story goal of some sort (maybe like figuring a way back home)
House/Island decoration or upgrading (for weapon and armor upgrading and possibly NPC hiring/housing if it's possible with the game engine)
Archipelagates has a solid frame work to be possibly an S tier game so happy to see what kind of stuff Raliv has in the works.