From what I understand, ANDROMEDA was originally intended to be a TREK series, set after the fall of the Federation.
The Andromeda Ascendant would have been another in the line of Enterprises, the Vulcans and Klingons were replaced with Vedrans and Nietzscheans, or something like that.
I always wished that this had been the show we got, we always heard about how great the Commonwealth was, but we never got to see it. By setting the story in the Trek-verse, it would have raised the stakes considerably.
After Roddenberry died, they took a bunch of story ideas he had and re-worked them. Earth: Final conflict was the other that made it on the air. Funny thing is, ANDROMEDA was originally going to be titled PHOENIX RISING, and ANDROMEDA was the title for another Roddenberry show. For some reason they either swapped titles or combined the show ideas.
Also, this wasn't the first time Roddenberry had a character named Dylan Hunt. The first was in a show called Genesis II http://en.wikipedia.org/wiki/Genesis_II_(film)
"In the 1973 made-for-TV film Genesis II, which introduced the character and was intended as a pilot for a potential series, Hunt was played by Alex Cord. Hunt was a NASA scientist who became trapped in suspended animation in 1979, only to awaken 154 years later"