Modifications. At any such review, the planning commission may consider requested modifications, with the concurrence of the developer, which are consistent with the comprehensive plan, do not conflict with the overall plan, are serviceable by existing or planned public facilities, and serve the public interest. For purposes of this section, the "developer" shall be the proponent of the original master plan, or its successors in interest. Where such entity is no longer in place, the developer shall be the association responsible for all common area maintenance or, if none, the owner of the greatest total assessed value property within the development.