Our typical use case surrounding related permissions for selected components (application visibilities, class accesses, field permissions, layout assignments, object permissions, page accesses, record type visibilities, tab visibilities) is to need to ensure that if a component is selected, its related permission is always selected also, with respect to a target set of profiles. We suggest you provide an affordance at the UI that selects related permissions en masse rather than requiring individual mouse clicks for each permission selection as at present.