The Treasure of the Midnight Isles is the most unique out of the three DLCs released up till now. It provides players with an opportunity of exploring more content as the part of the main campaign or setting out on a standalone journey - a perfect way to enjoy some Wrath of the Righteous without having to start a new playthrough or to test out an interesting build. If you enjoy challenging yourself to combat, it might be a perfect fit for you. However, if you prefer story-rich experiences, you might find the DLC lacking.