Watching the new season of The Expanse has led me to start thinking about a game I ran in GURPS perhaps decade ago. A "hard" science fiction thing using a lot of stuff from Transhuman Space put giving it more of a Cowboy Bebop spin: a little bit cyberpunk, a little bit 70s action film.
If I ever ran a similar I again, besides using a system besides GURPS, I think I would draw more visually from '80s and 80's sci-fi, borrowing some elements from things like American Flagg! and 80s cyperpunk rpgs. The players' would still be ne'er-do-well, planet-hopping bounty hunters/troubleshooters but with a different skin.