This is something I've been thinking about for a while now. Immortality is a big technology, and for some folks it will mean a substantial change in their civilization. There were a few that I wasn't sure would be able to make the cut and still stay more or less the same, but I think I have everything worked out.
For some civs, this is a total non-issue. Old-worlders, cargo cults, and Mechanica just don't have it. Old-worlders and Mechanica don't even want it, and so long as they stay cargo cults, CCs won't get it.
For some others, their basic worldview is not incompatible with immortality. This is actually a whole lot of folks: the Masquerade, Union, Tao, Stardwellers, Nanori, Roamers, Daoine, Gaiains, Dreamers, Disciples, and Logicians could likely handle immortality without any issues.
For the Independents, without a strong Biotech base and being relatively young, immortality is a recent innovation. The current generation is the first one that will experience immortality, and the effects on the civilization are yet to be seen.
For the Wraiths, having figured out their own path to eternal life, will be on the verge of a schism. The idea that other civilizations achieved immortality in their own bodies is a major shock. While they'll have a lot of people coming in for the "retirement" approach to life, they'll also lose many who want to keep their own bodies.
Spacers have the Bio but not the Cog - their bodies will last virtually forever, but their minds won't. They left Earth before the development of Meshes and never had the chance to develop them. As their citizens age and begin having mental breakdowns, euthanasia is practiced. It is typically voluntary - Spacers feel no fear and have a strong sense of duty.
As CAPP citizens get older they tend to go deeper into one particular part of the Pattern. Obsession is not uncommon, and is not discouraged as long as changes in the Pattern are still incorporated.
The main focus of the Replicants clearly needed to change. After some deliberation, the name, "The Association of Eternal Life" stays, but the focus will change from "we're the only ones to live forever" to "we're the only ones who keep backups." I'm still wrapping my head around it, emotionally, but the majority of the civilization can really stay intact.
The Stored were a major issue. They now live forever, at a higher rate than everyone else, and should realistically have outpaced everyone at this point. Therefore, I'm putting a major semi-unexplained event in their recent past. The Stored are recovering from a massive crash that wiped them back thousands of years. They don't even comprehend what memories remain of what happened, because they've lost points of Cog capability. Maybe they started to become a threat to the Aia. Maybe a group of Stored "ascended" by becoming less human and more AI, and took their toys with them. There is the prospect of Stored "ruins" and lost datacaches across the universe.
