A feature whereby there is a risk, every time you use the FSD, of a catastrophic failure
The failure transports you to a random system up to 30,000 LY away, and limits your jump range to 15 LY
This would be an awesome way to force CMDRs do some random exploring as they make their way back to their original destination!
frontier isnt going to do this.
plus the physics of the FSD would never cause this to happen
when you expirence a catastrophic car engine failure you arent transported 1000 miles across the globe instantly.
You roll maybe a few hundred to a few thousand feet before the car stops depending on how fast its going.
all of your propulsion stops in the event of an engine failure and the FSD would follow that rule as well.
Not only that but because its warping space to propel your ship the warping would stop and your ship would shift back to normal quantum density upon failure.
Once your ship is back to normal quantum density it is no longer traveling at speeds faster than light or near light.
The FSD has to warp space around the ship in order to propel it faster than light because non-quantum particles are incapable of traveling at the speed of or faster than light otherwise
So because of that, the internal spatial field of your ship does not have light-speed or beyond-light speed kinetic momentum,
but because of the difference in quantum density your ship travels at faster than light speed even though its internal kinetic momentum is far less than the speed of light.
An FSD breakdown is not going to randomly propel your ship 30,000LY away from home. I can see getting stuck between star systems maybe.
but you arent going to go from canada to europe because your engine malfunctions.