My problem with Star Destroyers, why the hell do we continue to see the SAME DAMN KIND OF SHIPS OVER 6000 YEARS from darkside users?!
Mostly because the galaxy is stagnant I guess. There's been little advancement for those 6000 years - people already have everything they need and use tech they barely understand, based on standard blueprints. When someone needs a new ship the first order of business is to check the records for any designs that fit the bill, then maybe customize it a bit if you prefer. Why research something new when there's no need and no new tech to put in it anyway?