RE: New way of doing master.cf to be more upgrade and packaging f

#I am still hoping
#someone wants to write the master.cf editing tool. It should
#probably also be able to merge a partial master.cf file into a
#complete master.cf file replacing any overlapping entries...
#
# post<somename> -e - < master.cf.add_or_update
#

I am not a postfix/mail guru, and I have not touched a master.cf for years.
But if someone is kind enough to post the specifications/scenarios/examples
of a needed post<mastername> program, pls do.

thanks and kind regards -botp