echo,
The graphite thing has pretty much come and gone, as far as viable manufactured products are concerned--Modulus makes a few, and I for one have never heard a cross word about Moses necks, which are specialist equipment, before today. But while either would be cool it would totally change the character of your bass and you might not like the result.
My advice, FWIW, would be to send your bass to Roger Sadowsky and tell him 'make this bass right, I don't care what it costs.'
Then, after your credit recovers, start hunting for an Alembic, which is a totally different animal. Those two should satisfy most of your electric needs.