It is the intent of this section that provision be made to ensure a reasonable choice of appropriate uses in case of the nonuse, abandonment or sale of property presently zoned for institutional use. In such an event, the Planning Commission shall consider the suitability of such tract for continued institutional use or for development within the requirements of an adjacent zoning district and shall, where deemed appropriate, recommend that the Zoning Map be amended by the Borough Council to accommodate such uses or other uses as it deems appropriate.