(1) Varying procedures for insuring the processing of land subdivision plans, within a reasonable period of time, relative to the number of lots or parcels and the extent of improvements required;

(2) Procedures for insuring that the arrangement of the lots or parcels of land or improvements thereon shall conform to the existing zoning at the time of recordation and that streets, or rights-of-way, bordering or within subdivided land shall be of such widths and grades and in such locations as may be deemed necessary to accommodate prospective traffic, that adequate easements or rights-of-way shall be provided for drainage and utilities, that reservations of areas designed for their use as public grounds shall be of suitable size and location for their designated uses, that sufficient and suitable monuments shall be required, that land which might constitute a menace to safety, health or general welfare shall be made safe for the purpose for which it is subdivided, and that adequate provision for water supply is made;

(3) Procedures for encouraging and promoting flexibility and ingenuity in the layout and design of subdivisions and land development, and for encouraging practices which are in accordance with contemporary and evolving principles of site planning and development.