en.wikipedia.org
Is it better to say "transmedia franchise"?
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It's true, English isn't my mother tongue/first language.
I don't mind if the name is ravager or reavers. The fact is I can't believe a group of mad men can drive a space ship but using some dummies-proof technology. If you have played some strategy game you know the impact of the wear. And the reavers aren't the type of people who can survive enough for at least three generations.
I didn't talk about aliens in the Firefly universe but about people who believe in the existence of aliens. That is an important aspect.
And today the "Alliance/Union of Allied Planets" may be potentially politically incorrect. It is not only by the bad relations between Chinese, Japanese and Sourth-Koreans, but also in the 2021 the public opinion will think different things about China because there are happening some facts in our real life.
I am not against the trope of evil megacorporation but the abuse of this.
Maybe you are right, if the changes are too much it is better to star from zero with a new franchise as a spiritual succesor.
We can't forget the high-tech, for example robots who nanotechnology to repair airships, 3D-printers and LED light for underground farming, allowing hidden "dungeons" as post-apocalypse bunkers. Or the secret of eternal youth being discovered, thanks the regenation of the telomeres (you can imagine the social impact when you end the university but you can't find a job because nobody retires), or "the club of the inmortals", important people whose minds are upoloaded to a high-tech server.