They don't really innovate in the Star Wars universe do they?

Nothing has changed as far as technology goes for at least 50 years, if anything, their technology has regressed (r2d2 doesn't fly anymore)

after market modifications and a couple of plot twists and you're good to go.

Technology in the Star Wars galaxy clearly plateaued millennia before the Republic collapsed into the Empire, and plateaued at a level that wasn't really all that advanced. It's as if they acquired the hyperdrive and said, "Well, that's it, folks! No more technological advances needed!"

Saturn V, the Space Shuttle etc. Oftentimes people do something just to show they can. The general rule is "we don't actually NEED anything better". In fact, if you take the mythology at face value, it would make sense not to innovate when some force-using schmuck can always show up to throw spanner in the works.

Of course, there's multiple reasons that could be explained in-universe, in particular possibly needing force-users to build them, as they were understandably in short supply. I don't know if they've actually given any reasonable reason for that.

Of course, the Death Star models were constantly innovating and improving, despite being against all known physics and economics. And look where THAT got them :p

star wars is still the best

Maybe they have a dumbed-down school system and science is becoming illegal

They don't even have email.

All the good inventions got taken? But yeah if it were our universe they’d be releasing new models of TIE interceptors every year with “revolutionary” new features.

Well if you think about it if you had a few thousand men. How are you going to put them in a ship like falken. If you had a ship big enough for all your men it will be a bit slow. But it would have a lot of fighting power

They had holograms, instantaneous communications, laser weapons, particle beams, and robots galore
but didn't even have replicators, transporters, tricorders, or blenders!

They build a bigger death star! :o

I guess they reached a plateu

Star Wars is out of fashion...

No.