I was thinking of a hardshell egg shape liferaft substitute, like the “Ovatek 7”. Ovatek.com. No worries about failure to inflate, fire resistent, insulated, warm, watertight, abrasion resistant, and reliable. Hydrostatic release.
If EL FARO had had a few Ovatek 7s, and some of the crew had gotten into them before she rolled over, there would have been some survivors.