hi KingDunnad,
it definitely could be expanded into something more but it was put under the restriction of the 1 page, 2 sides for the Jam deliberately.
I would presume a Gm using something like Pioneer or Orbital 2100 would sub in their own systems for handling delta-V.
That said. The Reserve numbers given are for excellent handling - assuming everything goes right. You don’t get a Hohman transfer without the delta-V. . If you waste any with a bad roll, everyone dies. If you mess around, everyone dies. If you make a wrong decision, everyone dies. If any component fails, you get the gist