By 31 July 2021, and based on the outcome of a public consultation conducted by the Commission, the Commission shall review, inter alia, (a) the operation of the structure of the securities markets, reflecting the new economic reality after 2020, data and data quality issues related to market structure, and the transparency rules, including issues related to third countries; (b) the rules on research; (c) the rules on all forms of payments to advisers and their level of professional qualification; (d) product governance; (e) loss reporting; and (f) client categorisation. If appropriate, the Commission shall submit a legislative proposal to the European Parliament and to the Council.