The notion that the same individual could both father children as a male and bear children as a female was indeed trippy in the 70's.

Also the concept of being able to back up your mind and restore it into a clone of yourself (as an adult or a child), or even into the body of an animal as a sort of tourist experience.

Mind-computer interfaces that connected you to the AI that ran the planet, or could be used as a phone...

There were quite a few interesting ideas in his works that would change societies.