IGN posted a review of the Trials of Obi-Wan. Take a look
The first thing to know about Mustafar is that it's incredibly dangerous. I mean, Darth Vader was almost killed there for crying out loud, so you can imagine what your chances are. Though it's not marketed as such, Trials of Obi-Wan is exclusively for high-level ground combat classes. Anyone who thinks they'd like to see what crafting opportunities might await them on the new planet is likely to find a giant insect ready to bite off their precious loom arm and spit it into a river of lava. Even the tougher 65+ crowd will find it advisable to take along a few friends when exploring the wilds of Mustafar.
For more info click the link below
http://pc.ign.com/articles/673/673548p1.html