Oh yes...technology never changes, I guess thats why the Z-95 Headhunter was never surpassed by the X-wing....or the Naboo N-1 didn't become an out-dated post Clone-Wars era....
Oh wait they were!
Yeah, I know. Technology advances, but the general design of ships and weapons and such doesn't I guess. Seeing as how the ISD was one of the most powerful Capital Ships ever built.
I never understood why people say the tech doesn't change. You can clearly see the change.