The good thing about the Internet is that every idea you could possibly have, somebody else alread had. Sometimes. So. As ANOTHER Star Wars movie is upcoming and my major beef with all Science Fiction serials is that NO TECHNOLOGICAL DEVELOPMENT takes place I thought: Will they EVER have the idea of making their light sabers LONGER? Like, maybe TWICE as long? After all, RANGE is crucial isn’t it.
So of course someone else has already done it.
There is ONE science fiction author who actually incorporated technological development into his storylines as the major element, and that guy is an engineer / computer scientist: Vernor Vinge. He did a bunch of books around the concept of the Technological Singularity. Best one is, The Peace War, contrasting a sclerotic NWO military-industrial complex with an anarchocapitalist underground.