If you're an options player, then you'll more-than-likely enjoy UWO. While you can always fall back on combat or adventuring for your pirating needs, you can also explore and discover new areas and items, craft goods to sell, or become a trader.
Of course, with job names like treasure hunter, master explorer, guerrilla or folklorist, you will have many other options to explore. The game also has a rich PvP system and weather that can actually hinder your adventuring. There will be a pre-load client available on September 29th for those of us who can't wait to get back to the stormy seas!