Except as otherwise provided in Sections 74-41 (Arenas, Auditoriums, Stadiums or Trade Expositions), 91-83 (Retail Uses Within Existing Arcades) and 91-841 (Authorization for retail uses within existing arcades), design changes to existing plazas, residential plazas or urban plazas may be made only upon certification by the Chairperson of the City Planning Commission that such changes would result in a plaza, residential plaza or urban plaza that is in greater accordance with the standards set forth in Section 37-70 (PUBLIC PLAZAS), inclusive. The provisions of Section 37-78 (Compliance), other than paragraph (e) (Special regulations for an urban plaza in the Special Lower Manhattan District), shall be made applicable to such plaza, residential plaza or urban plaza.