I enjoyed the first game a whole lot, much more than I thought I would when it was first released. I did not consider it much related to Middle Earth, even though it's supposedly set there, but as a game separate from Tolkien it was very enjoyable.
I do not automatically assume that a sequel will just be more of the same. There have been many game sequels which have significantly improved upon the original. I will wait and see how it turns out for this game. Then again, if someone didn't enjoy the first one I don't see why they would have any interest in a sequel.