Dual Hardcore Idea

This is a idea for two player hardcore, if one person dies it doesn't delete the hardcore world but if they both die it does.

But you can revive the said person with 10 totems of undying 1 totem for each heart. Make it possible to probably revive them in 1.18 with the warden. By giving the warden the 10 totems it would revive the said player since its on hardcore why not use that as a way of reviving but you'd have to run away after that player is revived so it gives a chance of actually losing the world but also a chance at keeping it.