I’d love to help if I can…
The level of spacefaring is clearly more advanced than you’d seein Soace:1889 or even Spelljammer. This sounds a bit more like Dragonstar.
I have
Dragonstar, and it's an influence, but I never took a liking to the "instantaneous transport" concept. Or the "fuelled exclusively by double-digit spellcasters" concept. In
Galactic Dragons, aetherships are propelled by enchanted turbines that are fuelled by an alchemical mixture-- much lower-level spellcasters to build the engines, and can be fuelled or operated by mundane experts.
They're faster-than-light, but since I don't even
remotely understand the math, they have to maintain a certain distance from large gravity wells before accelerating to FTL or else...
squish.
How “western” do you want to go? How “D&D”? Visuals?
Technology level is WWI, give or take, with faster-than-light steam dirigibles. Planetside transportation is mostly horse (or "horse") and railway, though biplanes have been adopted into military doctrine.
The
PHB Empire is inspired by Napoleonic France and Victorian England. The Emperor is the Head of State, but not the head of the Church; the Church is the official State religion that everyone belongs to and everyone tithes to, but its
official policy toward the religious practices (and divine magic) of "less advanced peoples" is one of pitying tolerance unless there's a threat to public safety. Legitimate arcane magic is taught at State-sanctioned and Church-sanctified Academies, with
unlicensed magic being a civil offense and
heretical magic (like diabolism or necromancy) being a hanging offense. Carrying weapons openly, except for a knight's sword, is a criminal offense, and only knights and dwarves are allowed to wear metal armor in public.
- Basically, this is your core races, minus halflings, and your core humanoids and smaller giants, minus hogoblin and ogre mage. Clerics (and similar) belong to a specific Order within the Church that sets their Domains, Wizards are specialists in one of the Eight Schools of Philosophy.
The
OA Empire is largely based on Rokugan, minus the Clans, and the "mythical China" of
wuxia novels and movies. There are two official State religions, and everyone is a member of both of them; the Emperor is the official Head of the Church for one, and merely a very important sacred figure in the other. (The Emperor can invest Clerics with divine power, or take it away, but only
in person; they only have political authority over Shugenja.) Arcane and divine magic are taught by exclusive schools, and are largely unregulated except for public hazards. Soldiers are equipped with ashigaru armor and rifles, while bearing swords is a privilege of the nobility.
- Humans, obviously, plus various yokai and hobgoblins and ogre mages. Clerics of the Emperor choose any two Domains from the Emperor's list, Wizards specialize in one of the five elements. Shugenja and Shamans exist.
Frontier Space, then, is the Wild West proper-- colonial Africa and the Americas in various states of decolonization ranging from "CROATOAN" to the Antebellum South. Indigenous styles vary, but colonial fashion tends to be a blend of PHB and OA styles. Pretty much everyone carries a six-shooter, and people who consider themselves tough carry a large knife or a smallsword. Every kind of magic is
catch as catch can, though summoning demons and animating the dead will still generally catch you a bullet. Planets are less hospitable, with less pleasant climates and larger, deadlier monsters.
- Humans are native here, like they are everywhere else. Except for planar/planetouched races, this is where all of the "weird races" come from. All of the classes and traditions of the two Empires are represented here, but Wizards and Clerics are rarer, even among colonials.
Most of the game takes place in Frontier Space, the contested area between the two Empires-- they
do not like each other, but are prevented by military logistics from direct conflict. More or less, they can each project force to the near side of the Frontier but not to the middle.