Death meant nothing, in the gods' world. The crystals' power did not allow it. Dozens of warriors, young and old, were brought there to 'rest' even after they'd passed. One or two were even extremely angry about it, as I recall.

[Which is as much thought as he's willing to give Seymour at the moment. He shrugs.]

Forgetting is always a possibility, when a crystal needs memories to sustain itself. Noct did insist he still had to go home and die, and warriors from a single world were often summoned from the same time period.