As stated before, I think the game lacks a few multi level interesting dungeons. I can only think of two that actually caught my attention.
Open world exploration is fine with me. I didn't have any problem figuring out where to go next as the main story pushes you to do quests/side quests around that area. If you go too far away, you encounter islands that are above your level.
However, the act of exploring is lacking. It would be cool to be able to walk in each island with your party, not walking in the world map, and discover hidden pirate treasures, maps to other treasures etc (instead of having the dialogue option that tells you how much time has passed and what you discovered). In a sentence, something more like Skyrim, where you can explore each cave, each dungeon has a different story, different books and loot to collect, some reason to care about what I find in these random gravesites...
The main story is okay but as stated before, it could use a bit more urgency (finding burned villages, and ashen corpses througout the archipelago), maybe visions from the Gods, losing your consciousness as Eothas moves further away from you (they used that only once).
On the plus side, I like the voice over, the fact that dialogues can potentially form the character of a companion and the fact that your place of origin is recognized in the game (my character is a pale elf from white that wends).