a fundamentally better option.

But it is fundamentally better: the smaller the volume you are trying to vitrify, the better the process works because the greater surface area is compared to volume, and so you get faster and more even cooling (and in humans, you get problems with circulation getting blocked off after a certain point). Go read through http://chronopause.com/ . This is why you can drop small things into LN2 and they recover fine, or why Fahy could do a kidney and bring it back, but why we can't do larger things.