Some might say Max could be a little boring with her jokes being said repeatedly, however you shouldn't have forgotten that it was a part of her character and the childhood she had.In addition the series was not all about Max that her having the same catchphrases could make it a bad one. Moreover, Caroline could add sth in the series that I personally liked.
To sum up I have to clarify that it was not as good as the other TV Series which everyone liked and enjoyed watching, but it's worth being watched for one time.