I like where this is heading! All good thinking, crazygeek. For the background, I recommend writing down all the big topics and then add subsections. I'll start you off:
Society
No overall Authority/Empire/Federation
No politics
Lots of local planets
Knights of Light - good guys - no bionics - telekenetics
Arakary - bad guys - lots of bionics
A neat sector of space, crammed with systems
Technology
No space fighters
Light jumping / Hyperspace common (cheap?)
Some sort of super-cool internet for hackers
Light sabres
Guns? Energy weapons?
People
Do you have aliens?
I like this D100 system better. Will there be skills?