I think negative mass is superior to ZPE for most purposes, and sorely underused. Have you read Forward's Timemaster?
As for implants, we already have great success in lifetime-duration metal implants with nervous system interfaces, like pacemakers and cochlear implants. If you want a scientificitonal justification for femsupremacy, rather than implants, you could posit some discovery that lets the uterus nurture a gengineered biological construct that proceeds to bootstrap/metastasize into pseudolipid mcguffins that gradually replace fat. This makes women doubly suitable as the only human sex with wombs and with the greater proportion of metabolism naturlaly geared to supporting fatty tissue. One can suppose that the replacement is gradual as natural fat is consumed and pseudolipids build up, so you further have an excuse for seasonal athletics, chicks in saunas, all women crews indulging in mutual calorie-burning activities on long voyages, etc.
no subject
As for implants, we already have great success in lifetime-duration metal implants with nervous system interfaces, like pacemakers and cochlear implants. If you want a scientificitonal justification for femsupremacy, rather than implants, you could posit some discovery that lets the uterus nurture a gengineered biological construct that proceeds to bootstrap/metastasize into pseudolipid mcguffins that gradually replace fat. This makes women doubly suitable as the only human sex with wombs and with the greater proportion of metabolism naturlaly geared to supporting fatty tissue. One can suppose that the replacement is gradual as natural fat is consumed and pseudolipids build up, so you further have an excuse for seasonal athletics, chicks in saunas, all women crews indulging in mutual calorie-burning activities on long voyages, etc.