If that module would make the ship stop when there's no player inside then yes.It's irritating to have to travel around 10km after a system crash even with extra cores...I like the idea, but a module to perform that function would be best. After all, disintegrator torpedoes are entertaining!
But another option would be to have a message displayed asking if you really want to exit the ship when it's moving faster then, let's say, 2 km/h. That would be much, MUCH simplier coding-wise.