Just a question:
Wouldn't auto-convergence only work accurately if the speed/range of the target stayed approximately the same between when the laser bolt was fired and when it hit? i.e., if you had an enemy fighter ~800 units away, and he is selected as the current target (prerequisite for auto-convergence, I assume), and you fire a bolt at him, and he increases his speed, then the shots actually have an even lesser chance of hitting him than if auto-convergence were disabled, because they were all focused on where the target used to be, instead of (possibly intentionally, possibly by accident) spread out slightly in front of the lead indicator, which would have let him run into the shots that would have missed him if he stayed the same speed.
Given this example, I think you'd want an assignable button on the keyboard to be able to turn the feature on/off, as it would be useful in some situations, and not in others. I imagine to preserve game balance, the AI would have to be able to figure out whether or not to turn this on as well. (Maybe through some calculation involving the target's distance/speed, and the probability of a hit, as well as the manuverability of the intended target.)
Just a thought.