This enhancement would enable field/raw to return more than the first level deep of any related item, something like $related_field = $pod->field( 'related_field', false, 3 ); would get 3 levels deep, default would be 1.
$related_field = $pod->field( 'related_field', false, 3 );
This also needs to be available for data() and export() methods of the Pods class
Depth is now available in data/export methods in Pods 2.3
It is not yet available in field() though.