I am a learner of english language. I appreciate the aboundant examples offered in this dictionary which help me learn how to apply the word to writing and daily conversation effectively. But one big drawback, only personal opinion, comes from the arrangement of the contexts which makes users difficult to find the wanted word fast. For instance, I often missed another explanation of a word because it is not placed right under the same headword, instead, it is placed 1 or 2 words apart, and (sometimes) the words before or after it is another word which has different spellings for which reason the wanted word was easily overlooked.
The second drawback, I would say, also has to do with the typeset. I found that the various meanings listed under one same word often is not well divided. It would be much better to have 1, 2, 3 and so forth before each different meaning for easy reference.
I also think that with the size and volume of this dictionary, you should be able to re-engineer the whole dictionary and add more words to it. In other words, vocabularis introduced in this dictionary seem short of the average considering its size and volume.