You need to be really careful giving your players technology (or magic) that can instantly kill them if something goes wrong. Because you just know what will happen at the first opportunity.
Commentary by Keybounce (who has not seen the movie)
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Commentary by memnarch (who has not seen the movie)
Hah, retroactive fun killing! If the physics, or at least all available technology, don't allow the hyperdrive to cause impacts of any kind, then there's no reason to worry about constantly attempting the jump if the equipment can handle it. However, this does handily explain why there aren't any relativistic or hyperdrive based weapons in movie-Star Wars. Cool space dogfights wouldn't be a reasonable way for combat anymore if ships are shooting projectiles with that level of energy from extreme distances. That also sounds exactly like the kind of weaponry Pete would eventually end up creating as a no-risk or doomsday weapon of some kind, so now the GM has a convenient out there as well.
Hmmm. On the other hand though, the experimental hyperdrive modulator has to do something different than a regular modulator right? Perhaps it's a specialized device that tricks the hyperdrive into thinking there's no obstructions, or expands the volume that the ship "grabs" for moving with a hyperdrive jump so having a rathtar chewing on the outside won't affect the hyperdrive. Or maybe it's a wormhole-generating-like device that lets the ship enter hyperspace without needing the normal space or acceleration for the jump. Star Wars' hyperspace jumps/dimension always felt less defined than Star Trek's warp drives, so I never got the idea of how it was supposed to work and maybe none of these ideas are actually plausible.
Rey: Leave this to me.
GM: A rathtar leaps onto the cockpit window, attempting to chew its way through!
Yanni: We need to get that thing off.
Yanni: Hold on! We’re jumping straight to lightspeed!
Chewbacca: That’s not even possible!
Yanni: I never think about that until after I’ve done it!
Chewbacca: Hyperdrives can only work if there are no solid obstructions. It’s fundamental to their operation.
Rey: Is that right?
Rey: But when we were escaping the Peace Moon blast at Jedha—
GM: K-2SO found a clear forward vector. If there had been so much as a pebble in the way, the hyperdrive would have failed.
Rey: So there was actually no risk of us dying in a spectacular explosion?
Rey: Wow, you just took all the fun out of it.