Rule is pretty straightforward, though I don't know what problem it fixes or changes because Star Wars has every kind of violence just about from simple assault to mass genocide. I mean even the movies have someone being burnt alive, beheading, and maiming of limbs. There are some pretty brutal deaths and legends has body horror as well.
About the only kind of violence I don't really see in star wars is already covered by the rules in the sexual content rules. So anyone worried shouldn't be unless you are beyond extreme in describing violence.