The SGPC Rehit Maryada is a good Rehit document that has the potential to unite the Panth but there are some shortcomings that need to be addressed as well e.g. Nitnem in the morning only lists 3 Baanis instead of the traditional 5 Baanis. Another problem is that it allows consumption of meat. Having said that, the reason why this Maryada contains such points is that it has attempted to keep all organizations e.g. Nihungs, Akalis, Taksals etc. together but in doing so, it has failed to get approval from any group at all.
Maryada can't be made to appease and unite all groups within the Panth but the focus should be to keep Rehit Maryada as pristine and original as possible. A Sikh should conform to Guru Sahib jee's Maryada and it should not be the other way around. It's said that the first attendance was attended by many prominent theologians and scholars of that time but all of these individuals were not involved in the preparation of this document. Unfortunately this document has not been accepted by either the traditionalists e.g. Taksals, Nihung organizations nor the modern organizations e.g. missionaries.
Kulbir Singh