The Torpedo Sphere is a borderline superweapon and while the missile boat is closer to what I had in mind i was thinking something that didnt carry a person that could fire one or several large waves of missiles at once rather than fire a couple of missiles, wait a second, fire two more, etc.
Basically local defences detect the arrival of badguys, a space station that is clear of mass shadows then deploys an appropriate number of these drones. The drones jump to where the enemy is unleash a barrage of missiles at the targets, destroying or badly damaging them and either go dormant or return to the station. The fact that they are drones means loosing one is no issue in terms of loss of life and financial cost wise they would be somewhere between a TIE and a X-wing, heck the intelligence on the drones dont need to be that high because all they are doing is pointing at a target and shooting..
List of problems with that idea.
1: Torpedoes take time to lock onto a target.
2: We've seen the long list of problems with Star Wars drone technology.
3: A Microjump will throw the missile lightyears out from their target.
4: Every jump has to be calculated exactly *cue Han's speech about jumping into a star etc*
5: The financial cost will be ASTRONOMICALLY high. (Ship + Hyperdrive + Torpedo/Missile Launchers + Loadout of missiles/torpedoes + Cost of Autonomous systems + Advanced Jump Plotting Computer)
Machinery of the complexity required to make your plan work would be more costly than the pilot who the Empire hires by the million.
Star Wars is the ENTIRELY wrong universe for your proposed technology to be viable within.
1. fair point but then a sentient pilot also has this issue
2. the issues drones have in my understanding is their ability to handle the complexities of manoeuvring in an effective manner during combat, something these wont be doing, a fairly basic droid brain could handle it, mostly for target recognition purposes.
3. It wont be the missile that jumps but the missile delivery system which only has to get close as a star fighter would in a similar situation.
4. the calculations would be simple compared to an intersystem jump as there are less mass shadows to contend with.
5. I think you are overrating the cost to be honest. the launching station can handle the jump calculations which is why I suggested they might be one way, though storing a return journey wouldn't be that hard so no need for a computer to process the jump. the ship only has to be sturdy enough to survive a hyperspace jump with a little armour to make it harder to destroy. Reactor, Reactor fuel, probably enough for an hour's operation+jump, sublight drive for manoeuvring and positioning, hyperspace drive for the FTL bit, drive fuel, launch tubes, targeting electronics, sensors, basic droid brain, communications suite with directional receivers to allow for target priority updates and aborts if necessaries, directionality would help prevent hacking attempts and a basic navigation suite able to utilise jump data. and that's it, shields would be a useful option but costly and not essential.
The drone would benefit from not having to carry any life support, probably wont need as powerful a inertial dampening system as seen on fighters either.