I hope you are kidding? Hell, Asteroids had moving ships and combat back in the 70s. Did you ever play Star Control? Freespace? Pirates of the Caribbean? And if you look at land-based games, they are rife with fluid combat from the 90s on. Even the most recent Star Wars game has ships moving in space when they fight - not all of them, but most of them. And no realism value? Last time I checked, things had inertia. The closest corollary to space combat would be navy battle and those ships don't ever stand still.
No, Star Wars in both the movies and games have all the ships standing still or moving very slowly. Unless chasing a small freighter, Star Destroyers never fly around at top speed shooting up Rebel fleets.
If you want to talk realism show me the videos of NASA and CSA space warships dog fighting in orbit please, and modern navy ships move because they have to worry about torpedoes (which can be dodged unlike most space born weapons), submarines, and keeping stable firing platform, things that don't have an effect in space, espcialy in the years of FTL travel and stellar empires.
Sins is a great 4X game, but the combat is dreadfully dull and uninspired. It was the first thing that hit me negatively about the game. I build this badass fleet and when it goes into combat, it sits there - combat is static.
I'm sorry, but I have built badass fleets too, and I think the combat looks fine. Do you ever stop to realise what an uncontrollable mess it would be if two large fleets started to fly amongst each over? Ugh.
Oh, and Homeworld's ships do not move by themselves unless you count the fighter's jiggle dance if bad guy comes too close. The player has to at least order an attack.