Okay folks, I may have a little more to go on after going over my notes, and re-thinking some aspects since reading all 101 logs again - the most significant being the information in the 28 latest ones.
After careful consideration, there could be two other potential areas to search, besides the area stated at the begenning of this thread.
I believe there is an order to follow with the Ancient Ruins, which ones come first.
As follows:
The first Ancient Ruin to pay attention to is this one - Gamma is the start of the map:
I will break down what this means:
I believe the two symbols to represent the Progressives and Abolitionists. These are extremely important, they represent TWO clans.
This is how the system map looks, comparing the Guardian Structures to the Ancient Ruins (Shrines):
As you can see, aside from the few clusters of Ancient Ruins in Progressive space (likely warzones in the second civil war), the Abolitionist "bubble" has no such Gaurdian Structures, and they surround Regor.
So, with that said, I'm strongly thinking more than ever that my old research was on to something with the symbols:
We have the first important piece of information because of Gamma - (hypothesizing) we have a map of the Guardian bubble, plus each tribe involved in the conflict - and, as you can see circled, it includes that messy mound above them, which I personally think represents the Vela Dark Region Nebula.
When you insert the image, above, ontop of a shot of the 3D map, it is very accurate:
However, this also now gives us an ORIENTATION for the next step!
The second ruin to go by now is BETA:
With a little amateur magic on photoshop...
This then leads onto the system with, potentially, the Unique Layout - the bonus is the Homeworld to boot (highly unlikely, but then this leads us onto the ALPHA type of ruin...
If the other Ancient Ruins represented 1) a bubble map layout, and 2) a direction with a pointed capstone one you had tilted the symbols, then 3) must be the final location - which brings us to this old chestnut of Alpha Ancient Ruin - everyone has long suspected it is a map of a system - but, of the Unique Layouts location or... maybe something more?
This, of course, brings me back to Melville - truth be told, we don't know the direction he was following - up, down, left, right, we just don't know.
So, the original area of searching is still viable - however, I would say some new search areas should be invested in:
1) Above the centre of Regor (where I am now)
or 2) Go 150-200 Lightyears straight up from Melville's position and start searching - chances are, he was heading downwards (further exploring the other capstone in the Beta image is what I suspect).