A Serenity/Firefly Mod

[Suicide Junkie]

Indeed you can. In fact, the Starblazers mod uses such a system already.

It might be good to make a grid of systems, so you can travel to the empty sectors between planets for the transfer of illicit goods and other such sneaky things.

[Hugh Manatee]

and brave the reavers..... equipped with engine disrupters, crew killers and kamakazi fighters that ram(you can order them to ram right, I've never tried fighters)

[Captain Kwok]

You could make the arrangements of the systems (planets, empty space, asteroids) circular like a spiderweb, that would allow for a reasonable approximation of our solar system. Each system would be connected to systems that were adjacent in the same "ring" and have connections to the upper and lower "rings".