As to the OP: for me, the Prize is becoming truly part of the world, not existing separate, apart, and above it. As others have said, becoming part of the world brings with it knowledge and undertanding, the ability to procreate, and the ability to achieve a natural death. But all of this becomes an integration with life/the world, that the immortals lack.
Now I can't say that runs consistently through the decades, but i think that's the core, and we see it get expressed in various ways. One of the big changes in the Series was that the Gathering is no longer a single event (a moment at the end of an original movie), but a process (allowing for villains-of-the-week and an ongoing serial tv franchise). I think there is an analogy to be made with the New Testament: If the movie is the Synoptic Gospels (a sigle, focal event for cosmic history), the the series is the Gospel of John, where the Kingdom of heaven is now (as an ongoing process).
This message got diluted, of course. The production duo of Davis and Panzer (now both passed) was determined to finder ever cheaper ways to try to make a buck out of this, and consistency did not seem to be something either prized.
Now I can't say that runs consistently through the decades, but i think that's the core, and we see it get expressed in various ways. One of the big changes in the Series was that the Gathering is no longer a single event (a moment at the end of an original movie), but a process (allowing for villains-of-the-week and an ongoing serial tv franchise). I think there is an analogy to be made with the New Testament: If the movie is the Synoptic Gospels (a sigle, focal event for cosmic history), the the series is the Gospel of John, where the Kingdom of heaven is now (as an ongoing process).
This message got diluted, of course. The production duo of Davis and Panzer (now both passed) was determined to finder ever cheaper ways to try to make a buck out of this, and consistency did not seem to be something either prized.