I think he's given us all we're likely to get, but I think it was enough to get us there:
TL;DR: I think the hidden system in the Formidine Rift can be reached via a path through 7 specific sectors in the Rift, using a ship with a 23 Ly or greater jump range.
A week or so ago when another Commander connected Salome' and her ship, the Seven Veils, with a 1,500 year old Muslim philosopher's idea of the seven veils being a series of obstacles between man and God, it got my gears turning. I'd heard the phrase Seven Veils before, but as a dance of some kind. Well, I started digging a bit, and it turns out I was right!
In the biblical account of John the Baptist's execution, the story goes that Herodias' daughter was told to dance for King Herod of Galilee at his party. She did, and well, so Herod decided to reward the girl anything she requested, up to the value of half his kingdom. She asked her mother, who told her to request John the Baptist's head on a platter. (He had been imprisoned for criticizing Herod.) While Herod did not want to kill John, he had given his word in front of several witnesses, so he had it done.
While the biblical account does not specifically name the girl or her dance, the Jewish philosopher Josephus wrote that her name was Salome'. More modern writers such as Oscar Wilde referred to her dance as The Dance of the Seven Veils when retelling the story. As it was reinterpreted for newer media, Salome' and her dance became a symbol for erotic desire, lust, and for Old-World vice.
But! This dance has a much older origin, in the Babylonian myth of Ishtar and her journey to the underworld to rescue her lover Tammuz. In this tale, Ishtar reaches the gates of the underworld but is refused access. She threatens to smash the gates in and release the dead to roam the earth, so the gatekeeper is instructed to let her pass. He opens the gates for her, one by one, requiring her to remove an item of clothing at each one. By the time she is through, Ishtar is naked. She rages at Erishkagal, the Queen of the Underworld, who imprisons Ishtar and plagues her with 60 diseases. Ea, the King of the Gods, sees that all sexual activity in the world has stopped, so he sends a messenger, Asu-Shu-Namir, to the underworld to demand Ishtar's revival and release. Once revived, Ishtar leaves the same way, donning a piece of clothing at each gate this time, until she is free.
Now, in the Sumerian version of this story, Inanna (Ishtar) may only remain free from the underworld if she finds someone to take her place. As she wanders the world, she finds only friends whom she does not wish imprisoned. But when she returns to her home, she finds Dumuzi (Tammuz) seated at the throne, not mourning her death at all. She chooses him to be imprisoned, but his sister Geshtinanna becomes stricken with grief and decides to take his place in the underworld for half of each year. Elements of the Ishtar/Inanna myths are borrowed for the myth of Persephone, also known as Kore or Cora.
So. What does all this have to do with the Formidine Rift? Lady Kahina/Salome' heard of it from the old pilot and prepares to leave to find it. While doing so, she must maintain her normal appearance as an Imperial Senator. She travels to Sol and Achenar before disappearing in 3301, and presumably finds the coordinates of something important in the Rift from either the Federal or Imperial archives. Remember, the Formidine Rift isn't completely unknown to spacers in the late 3200s, although its exact location may have been lost to legend. Drew did mention that his other writing may contain clues, and the Firmidine Rift is mentioned several times in his Oolite Saga. So we see in GalNet news that she upgrades her Imperial Clipper with highly advanced modules, including a fuel scoop, prototype FSD, and discovery scanner. We later see when she disappears that at least the FSD upgrade was a ruse, but she left a sigil (the Dark Wheel?) behind with her tiara in the ship. Between ED: Reclamation and GalNet news, the Seven Veils was described as being ready for a fight and was probably loaded out something like this:
http://coriolis.io/outfit/imperial_...aQ==?bn=Seven Veils - Explorer (Hypothesized)
I think the Clipper itself wasn't a ruse. It was a clue. Salome' and the Seven Veils gives us a context. To reach whatever is hidden in the Formidine Rift, we need to "pass through seven gates." I think this means there is a path that leads through seven sectors in the Rift, which can be followed using a ship with a jump range of about 23 Ly or higher, which also happens to be doable in a Cobra Mk. III (the old pilot's ship) rigged for combat. The only thing I haven't figured out yet is the coordinates of the target system. Without that, any combination of adjacent sectors could lead anywhere in the Rift.
Note: Some of Drew's Clues take on new meanings in the context of the Seven Veils myth. "The ahem core of the problem" may have been a reference to Persephone (Kore/Cora.) "make things a little less nebulous" may have been a reference to the veils in the myth as well as instructions to pay attention to the ship. (Nebulous of course means hidden or unclear, and so unveiling would mean to make clear.)