L4D is out, theoretically, so I've been thinking about Star Trek while waiting for the game to let me play. There are some silly clichès in the show, especially the 2-D nature of space. Only in Wrath Of Khan does someone note that all the ships are essentially on the same plane, and maybe they should take advantage of that fact?
Anyway, everyone knows that our galaxy is a disc, and that you get more matter the closer you get to the center of the disc. Naturally, there is also more matter on the center plane of the disc as well. If spaceships used free floating particles in space for fuel, (which canon says is not the case), it would be most advantageous to stay as close as possible to that center level. Of course, it's not significant enough to put people as close as they are in the show, but it's an interesting idea, at least.
This pulling fuel from space would also mean that ships couldn't battle in one area without exhausting it of particles; battles around fixed locations would favour those with better resource management. Moving battles would favour those being pursued, since they would get first access to the particles.
In case you think using space as fuel is silly, it has been proposed by those cleverer than me. Current scientific thought says that there isn't enough matter in space to make it worthwhile, but we are always discovering new things. In Science Fiction, particularly Star Trek, increasing the amount of Hydrogen floating in Deep Space would probably be the least far-fetched thing in the show.
All this is never going to be used, so I'll settle for asking for a new Star Trek TV show that keeps somewhat loyal to its roots. The last thing we need is 24 in space, however appealing that may be to middle management.