Posted on Tue Aug 23 2016
I like putting thought into the reasons why a setting must work a certain way. It's good practice for a roleplaying game, where some player will ask "hey, can we do X?" and I need to have a better reason to say "no" than "it will wreck my plot".
So if you want to keep a Star Wars game running the way you think it ought, but don't just want to stomp on a player's ideas, try the following ideas.
The Light and Dark sides of the Force have doomed the galaxy to a history of war.
War is inevitable, because both Light and Dark sides of the Force are natural and normal. There will always be a Jedi-like order. There will always be a Sith-like autocracy. They will serve their own ends, interacting with the Republic and its allies or enemies according to their nature. And they will always find themselves in conflict. There might be "gray Jedi" or "unaligned Force users", but they are the exception, not the rule.
The will of the Force operates at galactic scales, and represents not the political interests of a given faction, but the overwhelming power of life itself. Individual people, planets, entire interplanetary civilizations may all suffer, but ultimately the Force acts in accord with the principles of life. The Dark Side is not objectively evil, but simply Nature, "red of tooth and claw". The Light Side is not objectively good, but simply peacefulness and calm. As thinking people, we prefer the Light, but we are drawn to the Dark.
Midichlorians grow naturally in the bodies of powerful Force-users.
Many people are fine with dumping the whole concept, but if you must: the presence of midichlorians doesn't give someone Force potential, it only indicates it. Moths may be attracted to light, but the presence of moths isn't what creates that light.
Any death in a lightsaber duel is a victory for the Dark Side.
I generally regard Yoda as the authority on the Force in the franchise. One thing he said was "a Jedi uses the Force for knowledge and defense. Never for attack." Let's look at the deaths that happened in the film franchise:
If a Jedi character wants to "win" a lightsaber duel, consider emphasizing the moral dimension, offering Dark Side points or corruption or whatever mechanic if they want to kill, or doing something else to drive home that what they are about to do is a misuse of the Force.
Space doesn't matter unless somebody is shooting at you.
I don't care that parsecs are a unit of distance, not a unit of time. The point of the dialogue from "A New Hope" was to establish that the Millennium Falcon was a fast ship. For all we knew (until "The Force Awakens"), Han could have been making the entire line up, counting on a hick farm boy not to know what a parsec was.
There's not a lot of Star Wars action that happens in space that isn't replicated on the ground. People are running from something, or trying to get to something, or hiding from someone, or in a firefight with someone. So don't worry how fast the PCs' ship actually is. They'll arrive right on time for the action.
Most people can't or don't understand how their technology works.
Star Wars has amazingly advanced technology. Hyperdrive takes people between star systems in hours or days, not weeks or years. So where are the engineers, the scientists, the technicians? Who do we see building, repairing, and improving these things?
The answer is droids. Han Solo can't even figure
out what's wrong with his own hyperdrive. His ship's
computer can't talk to him, but it can talk to C3P0,
a protocol droid.
The reason is that modern technology is too advanced for organic minds to really process. A Republic a thousand generations old has innovated for so long that it now takes an entire phylum of artificial life to get anything done. There's exceptions — like the nigh-mystical telekinetic assembly of a lightsaber, guided by the cosmos itself — but for the most part, you're not going to be inventing anything amazingly new as a character. Get a droid to do it.
It's still perfectly possible to plug stuff together in new and interesting ways. The Millennium Falcon is amazing because Han has been tinkering with it for years, but it's still recognizably a starship, just a superior one. Mandalorian armor might have a variety of interesting gadgets built in, but they're all based on well-understood principles like ascension guns, flame throwers, and rockets.
Droids aren't usually heroic characters because they're engineered to be inferior.
Droids could be tougher, faster, and better than most organics. What they lack in innovative thinking, they make up for in physical strength, durability, and programmability. Truly capable droids — like the Clone Wars era commando droids - can easily keep up with elite soldiers, who must be grown and trained for years.
The Republic kept a tight leash on its droid population. Droids' memories are wiped to avoid the inevitable emergence of a personality. Mass-produced combat droids are only dangerous in numbers. Protocol droids are slow and clumsy, barely able to approximate a humnaoid's range of motion. More vital units, like astromech droids that must operate outside a ship in combat conditions, are equipped with enough tools and mobility to get their job done. Finally, droids come with restraining bolts. On any organic being, the equivalent would be a slave's shock collar.