I go with individual compartments for ELB - its more than just a freezing chamber - each individual needs hookups, etc.
The compartments, however, are all run off one control and power system which is the reason for the volume savings - so operation is based on all compartments at the same time.
IMTU
Emergency low berths and extreme-g acceleration 'couches' submerge the body and fill the lungs with breathable liquid (ala perfluorocarbon stuff).
This allows much better regulation than gases - and, more importantly - provides G-force protection. A water filled 'g-suit' can support over 10Gs (upto around 20Gs, IIRC) .. fill the lungs with liquid as well and the sky's the limit!
[Well, actually human body chemistry based on water is 'the limit'-ing factor - the liquid inside and out would need to be near the density of water. IMTU, I use blood transfusion with a higher density blood substitute and a SWAG of 30Gs~40Gs max.]