I can see how the Post Atomic horrors wouldn't be entertaining to watch, but since it's a part of canon, some fans will bitch and whine if it wasn't in there.
To me, the biggest appeal would be a show about humanity coming together, instead of being together. The struggle to overcome their differences and be unified by what we have in common. That is the core of Star Trek. Starships going swoosh is what Roddenberry used as a device to tell those stories.