Any plan drawn up as provided in section 1423 of this title shall be submitted to the assistant judges for their approval, and if they find that the plan, if carried out, would result in greater governmental efficiency for the areas involved they shall so notify the selectboard of the towns involved in the proposed consolidation and direct them to publish the plan in their respective towns and to call town meetings for the purpose of voting in said town upon the acceptance or rejection thereof. In the consideration of any consolidation plan submitted to them the assistant judges shall have due regard to the topography of the areas, the ease of transportation, the economic and social patterns, and whether a proposed consolidation would promote the interest of the inhabitants of the areas proposed to be consolidated. (Added 1963, No. 146, § 4.)