I can see your point but I think they made right call the explore transhumanism and consequences of immortality like this. Say we have hope for North Korea to found some civil rights law someday and that hope relies on fact that people change, unless not other way, they at least die. Now there's sociopath on top who has been hell bent to destroy the US since WW2. I don't think this would'v worked so well without establishing Saburo Arasaka's character to player.
I think, overall, death should weigh narratively upon Night City. If Jackie is that significant to V, there has to be a world of members of societies that were integral to something that was broken the moment someone decided to kill a hero. But there will never be that parallel in storytelling here because, frankly, CDProject Red is built around heroism. They do not like building failures and alas, that is what V became. A hero that cannot fail despite narratively being forced to fail. It makes no sense.