I don’t really know where I got the idea for this. But it’d be a nice bonus for Raynor and Swann if Advanced Optics improved spellcasting range by +1. It’d benefit Swann most of all, but Raynor could enjoy slightly longer range on yamato, which would help him to snipe problematic units (such as viper, enemy BC, hybrid) before they get in range to retaliate.
Meanwhile, with Swann, he’d get lots of benefits. Thor, Science Vessel, Cyclone, and (potentially) Hercules could gain a little range bonus which could make a world of difference for their survivability and ease of use.