I agree that it should not be a part of the standard profile data.
I was expecting something like "api//profile-101/about_me", but "api/profile-101?fields=about_me" would work as well as long as it is possible to easily process the result.
The managers field should also be moved out as an optional parameter because it can be huge.
Talking about it: I would like to have an API version number to check on to determine if I should make a new version of the App myself.
It would also be nice to extract a list of the last updated profiles within a familygroup/nearby with a timestamp. That would reduce the load and make it possible to reuse already loaded and sored data.