The Technical and Design Review Committee shall serve in an advisory and screening capacity and shall review and make comments and recommendations with respect to all detailed concept plans submitted to the Mayor and Council and all site plans submitted to the Planning Board relating to proposed redevelopments on municipally owned property, or on any other commercially zoned property in the Borough's downtown. The Technical and Design Review Committee shall not impose standards or technical or design requirements that will infringe upon the marketability or economic feasibility of a project, except in compliance with such design guidelines as may be adopted from time to time by the Mayor and Council. The scope and extent of the review engaged in by the Technical Design and Review Committee and its subcommittees, if any, shall be proportionate to the nature and extent of the proposed development, it being understood that smaller projects will be subjected to less-extensive technical review and comments than larger projects involving greater bulk and potential impact on the Borough and its infrastructure.