The commission shall, within 90 days after January 1, 1977, adopt, after public hearing, procedures for the preparation, submission, approval, appeal, certification, and amendment of any local coastal program, including, but not limited to, the following:
(a) A common methodology for the preparation of, and the determination of the scope of, the local coastal programs, taking into account the fact that local governments have differing needs and characteristics.
(b) Recommended uses that are of more than local importance that should be considered in the preparation of local coastal programs. Such uses may be listed generally or the commission may, from time to time, recommend specific uses for consideration by any local government.