Re: Lock-On System
It could be built as a ranged Drain versus a vehicle's DEX, as in 5E there isn't a separate DCV stat.
As the lock-on is being acquired, it is Draining more DEX. Limitations would be only to affect DCV, and only versus attacks from the particular locking on weapon system. Advantages could include no range modifier, increased maximum range, or megascale for very long distance battles. Electronic countermeasures would be Power Defense only versus this ranged Drain, with a possible limitation that is is a skill versus skill contest of Systems Operation.