Titles: Incorrect translation of Ms to Miss
At the moment, in the front end, it is possible to use titles Mr, Mrs and Ms. In the API, this then becomes Mister, Misses, Miss.
There is a difference between Ms and Miss and someone who is a Ms is not necessarily a Miss. There should be a way to indicate that a female guest does not want to share their marital status - by at least introducing two different titles for Miss and Ms in both Front End and API, but better still by updating the titels altogether to reflect modern age.