Instead of rushing to increase density why not improve quality!!!
I've lost track of the number of drives I've had crap out for no good reason other than shoddy workmanship! most of them within the first 12-18 months of use!
What happened to drives you could count on not to fail within the first 5 years?
Cost cutting, corner cutting, rushing to increase densities - first and foremost, start making a reliable product!