I think, the only real way to let travel work and avoid the "space rocks from Gamelon" bombardment issue is to step out side the setting, say You Just Don't Do That because it's out of genre for the kind of story that's intended to be told, and work from there. Kamikaze drones, coil guns, ramships, fine, whatever, but nothing more than anti-ship even with in-'verse justification. Inelegant, perhaps, but trying to rules-lawyer weapons out of possibility by tweaking the local version of physics is just a challenge to find another loophole.
- CDSERVO: Loook *deeeeply* into my eyes... Tell me, what do you see?
CROW: (hypnotized) A twisted man who wants to inflict his pain upon others.
For the next 72 hours, Itachi intoned, I will slap you with this trout. - Spying no Jutsu, chapter 3
"In the futuristic taco bell of the year 20XX, justice wears an aluminum sombrero!"hemlock-martini
--
"Anko, what you do in your free time is your own choice. Use it wisely. And if you do not use it wisely, make sure you thoroughly enjoy whatever unwise thing you are doing." - HymnOfRagnorok as Orochimaru at SpaceBattles
woot Med. Eng., verb, 1st & 3rd pers. prsnt. sg. know, knows
- CDSERVO: Loook *deeeeply* into my eyes... Tell me, what do you see?
CROW: (hypnotized) A twisted man who wants to inflict his pain upon others.
For the next 72 hours, Itachi intoned, I will slap you with this trout. - Spying no Jutsu, chapter 3
"In the futuristic taco bell of the year 20XX, justice wears an aluminum sombrero!"hemlock-martini
--
"Anko, what you do in your free time is your own choice. Use it wisely. And if you do not use it wisely, make sure you thoroughly enjoy whatever unwise thing you are doing." - HymnOfRagnorok as Orochimaru at SpaceBattles
woot Med. Eng., verb, 1st & 3rd pers. prsnt. sg. know, knows