I am currently using the calendar: getSchedule API in MS Graph to get availabilityView data. I request an entire month of appointments and only need the streamlined data about when I am booked and when I am free. It works great, but it returns not only the availabilityView but also an enumeration of every appointment in the range that I requested.
The extra information is a much larger load on the network in terms of data quantity. And it includes much more personal information (the actual appointment titles and participants) creating a security vulnerability.
I would love a feature that let me include a $select=availabilityView query parameter or just a parameter in the request body to specify that I only want the availabilityView field.