Ted, are you saying that creating a unique string for an individual entity might be "trying to do too much in the NAF"? If so, I'd say that is the opposite direction we've always been trying to move. Or has it been decided that Cutter's object to "show what the library has by a given author" doesn't apply anymore? (Well, according to most of the "discovery" interfaces being foisted upon us nowadays, much of Cutter is essentially thrown out the window, with serendipity being the primary means of discovery...)
Until we are able to use identifiers (such as authority record IDs, whatever) to bring the authority and bibliographic metadata together for the user, unique AAPs are absolutely required to meet the user's needs with even the most minimal efficiency.
Kevin M. Randall
Principal Serials Cataloger
Northwestern University Libraries
Proudly wearing the sensible shoes since 1978!