Jelathnia
Yes, the nanoseed does not run eternally. The story could be 'fast-forwarded' a few dozen years, where we make the currently living homins at the end of their seed's lifespan, and for some reason or another a large group of homins suddenly found their ways to Silan. With the necessary storytelling around it.What would be the lore behind this, though? As a homin ages, the "nanoseed" that allows them to respawn wears out? In that case a chance of permadeath might make more sense (there would/could/should be a very clear distinction between a normal respawn countdown and a permadeath countdown).
It would be interesting to see aged characters' lives sacrificed during crucial outpost battles, makes for some nice storytelling.
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Kaetemi