Originally posted by Sesquipedalian
The method here proposed sounds like a more accurate account of the concept that the canon FS2 techno-babble is based on.
In practice, however, the FS universe's subspace more closely resembles the wormholes of Kip Thorn, opening a "tunnel" between two points of space.
That's the pilots and everday human's (ergo no quantum physics degree or a sixth sense) impression of the phenomenon.
The reason why the distinction is important is that even though I can jump, and so can my enemy; the fact that there are an infinite number of vectors makes it possible to completely miss each other in subspace.
This is the reason why subspace tracking was needed to take out the Lucifer.
Also the detectable presence of stellar bodies also makes a couple of extreme tactics possible - I mainly speak of intra system tactics.
With the sun as your reference you could change your vector mid-jump and change course in subspace.
Their presence also means that you never jump in a straight line - the gravity still takes its toll and bends your path, albeit not as strong as in normal space.
(It is also possible some of the missing or black matter actually resides in subspace.)
An added possibility is that the intense energy levels of a stars core automatically makes them somewhat present in subspace as well therefore their gravity is present stronger than if all their matter is in normal state.
It was also never explained what moves you through the corridor - I also formed an explanation:
When you take your vector, you're always looking for one where the destination's gravity field is stronger than your departure's.
Doing so allows you to travel without any prolusion of your own beside the subspace engine and you can go on without complex and very fragile ion engines that are best suited for this sort of travel. (Fusion engines are stronger, but their specific impulse is a lot worse AFAIK).
If that's the practice, it also explains why gravity makes subspace travel easier - it's not that gravity makes accesing
It's actually quite the opposite: subspace is used to acces gravity!
Where the gravitic fields are stronger, a minor vector will put you into subspace and into the grasp of the destination's gravity.
On the other hand when the destination's field is weak you have to take a sharper vector that consumes more energy.
In case of interstellar travel making a vector of your own probably takes astronomical ammounts of energy therefore you have to look for inherent irregularities or rifts in the structure of spacetime - AKA as nodes.
The only premissa of this mode of travel is that a vector shouldn't be isotropic - which is pretty justified IMHO.
The subspace corridor appears as a warped image of the universe. If that is so, than along that vector the universe wasn't uniformly shrunk therefore it is
indeed an anisotropic phenomenon.