This is a copy-paste from an idea I had in another part of the forum. I've placed it here in separate as I am making it a house-rule.
These are points within system where gravity becomes null, and so their influence during Translation. They could be used in desperate times, but the chance of shocking against a planetary-warp-anomaly-correlative in the warp is still very likely.
A -10 Navigation-Stellar followed by a -60/-40 option for Navigation-Warp test for a Navigator to find an ideal Lagrangian point where translation in-out of the warp would be possible within a gravity well.
It also needs to take into account the size of the star and planets nearby, as their correlative in warp-space could smash the ship anyhow when it translates, so being able to do this should be rare.
For example: a system with a dim small white star that has 2 planetary bodies could have two Lagrangian point. But using the one closer to the start would inflict a -60 instead of -40 on the warp nav test due to the increased amount of warp anomalies/reefs representing being closer to the core.