An archived version of the blog announcement by Bryce Zabel of the failed reboot proposal he and J. Michael Straczinski developed in 2004 exists. The 14 page treatment is also archived:
A Google search indicated most folks at the time on message boards considered this a reboot of TNG's "The Chase" crossed with The Original Star Trek rebooted and recast - like the 2009 movie did. This is accurate. My opinion also is JMS was trying to add in some of the ancient First One's type motifs he did so well in Babylon 5 (and disastrously in Legend of the Rangers) to the Star Trek universe.
From the Treatment's various pages...
"We want to re-boot STAR TREK. The original. Pure and simple. The characters, universe
and situations that have attracted, and continue to attract, a worldwide audience. Re-set…
Imagine taking those characters, and using what we know now about the universe, and
combining it with the kind of storytelling that audiences of 2004 are used to seeing in modern prime-time television."
"We will start with a two-hour pilot that tells the story no one has ever seen: the
circumstances that lead Kirk and McCoy (friends before this) to meet Spock for the first
time. It will involve their discovery of a lost city on an uncharted world, nearly a million
years old, and their encounter with the race that built it, a race long sought after by every
civilized world for the tremendous advantages they could provide."
"A race, long thought dead, but which our characters know is still out there
somewhere...waiting for us...waiting to see if its children can come and find it, there in the
darkness between the stars....
And there are others out there, also searching for this race...forces of darkness who may
view our activities with more than a little hostility.
One thing we will discover is that buried deep within the DNA of humans, Vulcans (even
Klingons) and other intelligent bi-pedal races is a mathematical code, something buried so
deep and of such complexity that it could not possibly have occurred by chance."
And where it goes off course in my opinion...because NO IT IS NOT ODD!
As noted above and as established in television history, Kirk was the youngest starship
captain in the Federation...but what led to this? We know that the Enterprise was sent out
to explore where no human had gone before...but if you stop and think about it for a
moment, isn’t that an odd assignment...to take one of the finest ships in the fleet, give it to
the youngest captain in the Federation, and tell them to just go drive around and see what
they can find? It’s peculiar...until you allow for the possibility that they were looking for something
specific...something they had to keep a secret even from the rest of the crew"
Compare to TNG's "The Chase" where the Enterprise, Klingons, Romulans, and Cardassians chase from planet to planet trying to unlock an ancient DNA program only to discover a greeting by the first humanoids saying they put this message into the primordial soup and made the end result of evolution something humanoid as their legacy.
Babylon 5, JMS's competitor to TNG and DS9, focused on a galaxy plunged into war that ultimately was a feud between two species millions of years old over how the humanoid (non-lovecraftian) species of the galaxy would develop. That is - focusing on ancient aliens is a very Babylon 5 thing to do - even if Star Trek had done it often enough too, "City on the Edge of Forever" for example. Unlike classic Star Trek this would have been an ongoing multiyear theme in the reboot.