I am still learning and exploring LingQ, and find it is a wonderful means to improve my high-beginner to lower-intermediate level.
I enjoy going through the lessons each sentence at a time. While LingQ does provide a means to dictate sentences being reviewed and provides the dictated text with grading, I think being able to hear what we have dictated would be a nice additional feature. I have used this feature in another software package and find it very useful.