Currently inCircle geospatial search allows to retrieve points and locations. It is foreseeable though that it would be used to locate objects that are nearby to certain point. In that case, it is convenient to sort these objects by proximity to the search center.
Thus, I think it would be nice if one of the inCircle results allowed to retrieve distance. It is probably calculated anyway, but if not it would be easy to find it with CoordinateUtils I imagine.
It is possible also to write custom function calculating distance of two points and use it, and that may be a worthy addition too, but given that the search probably has this information or at least may be frequently used in the scenario where it would be needed, may be a nice addition.