In version 3.1, every super-jovian has a Lagrange Point sixty degrees behind it in its orbit. This is really the L5 Lagrange Point and I am ignoring the other four because this one will work best from a gameplay perspective. As the planet orbits the star, the Lagrange Point orbits with it. As some systems may have multiple super-jovians, they will also have multiple Lagrange Points (LP). These LPs act as mini-jump points within their system. Because jumps from LPs are to destinations within the same system, the gravitational stresses are far less than for an interstellar jump point and therefore a ship does not require a jump engine to use LPs. Any ship can make an intra-system jump from one LP to any other LP in the same system, even one orbiting a different star within the system. When you select an LP as a movement destination, you will get a list of possible intra-system jump destinations in the popup box where teams or commanders are selected.
The LPs are shown on the map simply as LP1, LP2, etc. In the Task Group window they are shown next to the planet whose orbit they share. So you might see Jupiter Lagrange Point as a destination. When you add intra-system jump orders, the name of the planet sharing the orbit is listed. So an order may read Intra-system jump to Jupiter Lagrange Point. Because these are intra-system rather than interstellar jumps, there is no scattering on arrival.
This will allow a little more flexibility in movement within a system, perhaps giving easier access to a good source of minerals but, unlike regular jump points, they move over time. They could allow access to distant companion stars without the need for hyper-drive if those stars are also orbited by a superjovian. They may also provide a source of conflict and confrontation, both for their access to the resources of distant stars and perhaps as an avenue of attack if their orbit brings them close to inhabited worlds. Any ships or bases that are in the same location as the Lagrange Points will orbit with it, just as if there were in orbit of a planet.
Steve