I'm really enjoying LH, but I think it's an expansion where you really need to have played the original game a lot to appreciate the differences/improvements.
I'm concerned that when it comes to the mainstream reviewers they won't have played Fallen Enchantress enough to notice the differences in LH, and this could lead to lower scores than the expansion deserves. I think the list of new features (used for marketing / game description) don't sound as impressive as they really are in practice.
This isn't a negative post - I couldn't go back to FE after playing LH (even if it is only beta), i'm just a bit worried about what the press will make of it.