To add to the discussion, I just found this little gem. The Star Wars Rule Companion, page 36, Guns Modifier Chart. I'd like anyone and everyone interested in this discussion to take a look at this and voice your opinions. This could help when it comes to fire-linking and weapons batteries.
Also of note, it looks to be a 1st edition book. While some might discount the book for that reason alone, I have seen some cool stuff in what few 1stEd books I've been able to look at in the past, though my experience is almost completely with 2ndEd. Before this, the only 1stEd books I had looked at was whichever book Martial Arts maneuvers were in (which were never reprinted or updated in 2ndEd, as far as I am aware), and Galaxy Guide 6 Tramp Freighters 1stEd (to compare differences of mod gear and stuff between editions).