I just wanted to add that the main reason we don't used autonomous robots in combat already it problems with threat identification. Most of the targeting/tracking is motion and or heat based. You just can't have your robot blasting friendlies and non coms. along with the enemies.

The thing I find the most ridiculous about star wars weaponry is the battle droids in the prequels that couldn't hit the broad side of a barn. We have robots today that have gyroscopically stabilized weapons and laser range finding so good that they basically never miss a stationary target and have such good tracking that they get almost 100 percent accuracy on moving threats. That scene where jar jar's people were fighting the battle droids would have been a blood bath if the droids used technology as "primitive" as what we have now let alone some super advanced future tech.

Not to mention that it makes no sense for a battle droid as infective as those to be manufactured at all let alone in such vast quantities as depicted in the movies.