A couple of months ago when Elon did his Boca Chica Starship presentation I got interested in comparing the differences between Dragon 2 versus Starliner. I was struck by the total number of rocket thrusters used by each spacecraft. The Crew Dragon has a total of 26. It has 8 SuperDraco engines for aborts and 18 Draco for attitude control, orbital maneuvering, and deorbiting.
Starliner is equipped with 4 for potential launch aborts, 20 to support orbital maneuvers, 28 for on-orbit maneuvering and ISS reboost, and finally 12 for atmospheric re-entry. A total of 64. Amazing number, necessary or just added complexity?
To quote Elon during his September TX presentation, "The thing I’m most impressed with when I have design meetings at SpaceX is, ‘What did you undesign?’ Undesigning is the best thing. Just delete it, that’s the best thing."