What's up with the Starborn and jumpnodes?

Imagine a stand of old-growth forest. Under the trees, very little light reaches the ground, so there is almost no underbrush. At the edges of the forest, where sunlight does reach the ground, there is a heavy growth of bushes and shrubs that acts as a barrier to the woods. If a traveler wanted to cross the forest, hed first have to force his way through these bushes, so hed search for a nearby thin spot. Once through the bushes it would be a fairly easy walk through the trees. At the far side of the forest, hed again look for a thin spot in the bushes and force his way out. If he kept using the same route, the bushes would eventually stop re-growing, leaving a permanent hole in the barrier. There would also be a noticeable path in the forest. The Starborn are the travelers. The forest is subspace and the holes in the bushes are the jumpnodes. While the Starborn can push into subspace whenever and wherever they want to, it does take a certain amount of energy, so they tend to use the ...  more